/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 19:52:48,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 19:52:48,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 19:52:48,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 19:52:48,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 19:52:48,812 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 19:52:48,814 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 19:52:48,816 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 19:52:48,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 19:52:48,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 19:52:48,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 19:52:48,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 19:52:48,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 19:52:48,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 19:52:48,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 19:52:48,831 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 19:52:48,832 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 19:52:48,833 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 19:52:48,837 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 19:52:48,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 19:52:48,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 19:52:48,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 19:52:48,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 19:52:48,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 19:52:48,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 19:52:48,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 19:52:48,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 19:52:48,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 19:52:48,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 19:52:48,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 19:52:48,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 19:52:48,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 19:52:48,861 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 19:52:48,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 19:52:48,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 19:52:48,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 19:52:48,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 19:52:48,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 19:52:48,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 19:52:48,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 19:52:48,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 19:52:48,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 19:52:48,917 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 19:52:48,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 19:52:48,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 19:52:48,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 19:52:48,920 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 19:52:48,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 19:52:48,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 19:52:48,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 19:52:48,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 19:52:48,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 19:52:48,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 19:52:48,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 19:52:48,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 19:52:48,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 19:52:48,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 19:52:48,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 19:52:48,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 19:52:48,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 19:52:48,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 19:52:48,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 19:52:48,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 19:52:48,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:52:48,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 19:52:48,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 19:52:48,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 19:52:48,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 19:52:48,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 19:52:48,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 19:52:48,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 19:52:49,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 19:52:49,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 19:52:49,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 19:52:49,222 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 19:52:49,222 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 19:52:49,223 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-15 19:52:49,299 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f8442aaa/7809dab8dfb64f3caea06f949496fcc4/FLAG5102fbe97 [2020-10-15 19:52:49,810 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 19:52:49,810 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench-2.i [2020-10-15 19:52:49,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f8442aaa/7809dab8dfb64f3caea06f949496fcc4/FLAG5102fbe97 [2020-10-15 19:52:50,129 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f8442aaa/7809dab8dfb64f3caea06f949496fcc4 [2020-10-15 19:52:50,140 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 19:52:50,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 19:52:50,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 19:52:50,145 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 19:52:50,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 19:52:50,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727c3d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50, skipping insertion in model container [2020-10-15 19:52:50,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 19:52:50,235 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 19:52:50,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:52:50,766 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 19:52:50,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 19:52:50,881 INFO L208 MainTranslator]: Completed translation [2020-10-15 19:52:50,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50 WrapperNode [2020-10-15 19:52:50,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 19:52:50,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 19:52:50,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 19:52:50,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 19:52:50,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,929 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 19:52:50,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 19:52:50,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 19:52:50,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 19:52:50,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... [2020-10-15 19:52:50,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 19:52:50,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 19:52:50,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 19:52:50,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 19:52:50,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 19:52:51,029 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-15 19:52:51,029 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-15 19:52:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-15 19:52:51,030 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-15 19:52:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 19:52:51,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-15 19:52:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 19:52:51,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 19:52:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-15 19:52:51,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 19:52:51,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 19:52:51,034 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 19:52:51,407 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 19:52:51,407 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-15 19:52:51,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:51 BoogieIcfgContainer [2020-10-15 19:52:51,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 19:52:51,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 19:52:51,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 19:52:51,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 19:52:51,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:52:50" (1/3) ... [2020-10-15 19:52:51,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b41822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:51, skipping insertion in model container [2020-10-15 19:52:51,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:52:50" (2/3) ... [2020-10-15 19:52:51,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b41822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:52:51, skipping insertion in model container [2020-10-15 19:52:51,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:52:51" (3/3) ... [2020-10-15 19:52:51,419 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench-2.i [2020-10-15 19:52:51,431 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 19:52:51,431 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 19:52:51,437 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 19:52:51,438 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 19:52:51,464 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,464 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,465 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,473 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,474 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,474 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,474 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,475 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,475 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,475 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,475 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,476 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,479 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,479 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,480 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,480 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,480 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,481 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,481 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,481 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,481 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,482 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,482 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,485 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,485 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,486 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,486 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,486 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,486 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,487 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,491 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,492 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,492 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,492 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,492 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,492 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,501 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,502 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,502 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,502 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,503 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,503 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 19:52:51,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 19:52:51,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 19:52:51,545 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 19:52:51,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 19:52:51,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 19:52:51,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 19:52:51,545 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 19:52:51,546 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 19:52:51,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 19:52:51,562 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 19:52:51,564 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-15 19:52:51,566 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-15 19:52:51,568 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-15 19:52:51,606 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-15 19:52:51,607 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 19:52:51,612 INFO L80 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 55 events. 5/55 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 84 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2020-10-15 19:52:51,614 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-15 19:52:52,655 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-15 19:52:52,739 INFO L132 LiptonReduction]: Checked pairs total: 943 [2020-10-15 19:52:52,739 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-15 19:52:52,746 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-15 19:52:52,758 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-15 19:52:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-15 19:52:52,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 19:52:52,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:52,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-15 19:52:52,768 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:52,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times [2020-10-15 19:52:52,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:52,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716416079] [2020-10-15 19:52:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:52,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:53,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716416079] [2020-10-15 19:52:53,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:52:53,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 19:52:53,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810275090] [2020-10-15 19:52:53,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 19:52:53,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:53,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 19:52:53,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 19:52:53,034 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-15 19:52:53,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:53,110 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-15 19:52:53,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 19:52:53,112 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-15 19:52:53,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:53,125 INFO L225 Difference]: With dead ends: 83 [2020-10-15 19:52:53,125 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 19:52:53,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:52:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 19:52:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-15 19:52:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-15 19:52:53,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-15 19:52:53,171 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-15 19:52:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:53,171 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-15 19:52:53,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 19:52:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-15 19:52:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:52:53,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:53,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:53,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 19:52:53,174 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times [2020-10-15 19:52:53,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:53,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502865147] [2020-10-15 19:52:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:53,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502865147] [2020-10-15 19:52:53,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:52:53,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:52:53,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028485760] [2020-10-15 19:52:53,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:52:53,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:53,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:52:53,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:52:53,279 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-15 19:52:53,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:53,334 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-15 19:52:53,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 19:52:53,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-15 19:52:53,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:53,336 INFO L225 Difference]: With dead ends: 80 [2020-10-15 19:52:53,337 INFO L226 Difference]: Without dead ends: 75 [2020-10-15 19:52:53,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:52:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-15 19:52:53,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-15 19:52:53,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-15 19:52:53,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-15 19:52:53,348 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-15 19:52:53,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:53,349 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-15 19:52:53,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:52:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-15 19:52:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:52:53,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:53,351 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:53,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 19:52:53,351 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:53,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:53,351 INFO L82 PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times [2020-10-15 19:52:53,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:53,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362059342] [2020-10-15 19:52:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:53,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:53,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362059342] [2020-10-15 19:52:53,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:52:53,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:52:53,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826701906] [2020-10-15 19:52:53,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:52:53,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:53,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:52:53,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:52:53,459 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-15 19:52:53,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:53,486 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-15 19:52:53,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 19:52:53,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-15 19:52:53,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:53,488 INFO L225 Difference]: With dead ends: 73 [2020-10-15 19:52:53,488 INFO L226 Difference]: Without dead ends: 70 [2020-10-15 19:52:53,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:52:53,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-15 19:52:53,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-15 19:52:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-15 19:52:53,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-15 19:52:53,498 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-15 19:52:53,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:53,498 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-15 19:52:53,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:52:53,499 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-15 19:52:53,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-15 19:52:53,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:53,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:53,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 19:52:53,500 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:53,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:53,501 INFO L82 PathProgramCache]: Analyzing trace with hash -244724056, now seen corresponding path program 2 times [2020-10-15 19:52:53,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:53,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697970335] [2020-10-15 19:52:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:53,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697970335] [2020-10-15 19:52:53,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:52:53,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-15 19:52:53,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524326394] [2020-10-15 19:52:53,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 19:52:53,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:53,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 19:52:53,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 19:52:53,559 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-15 19:52:53,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:53,621 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-15 19:52:53,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 19:52:53,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-15 19:52:53,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:53,624 INFO L225 Difference]: With dead ends: 86 [2020-10-15 19:52:53,624 INFO L226 Difference]: Without dead ends: 80 [2020-10-15 19:52:53,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:52:53,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-15 19:52:53,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-15 19:52:53,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-15 19:52:53,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-15 19:52:53,634 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-15 19:52:53,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:53,635 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-15 19:52:53,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 19:52:53,635 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-15 19:52:53,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:52:53,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:53,636 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:53,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 19:52:53,637 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:53,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:53,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times [2020-10-15 19:52:53,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:53,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778788549] [2020-10-15 19:52:53,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:53,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:53,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778788549] [2020-10-15 19:52:53,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16963195] [2020-10-15 19:52:53,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:53,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:52:53,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:53,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:52:53,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:53,904 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:52:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:53,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:53,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-15 19:52:53,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339386178] [2020-10-15 19:52:53,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 19:52:53,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:53,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 19:52:53,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:52:53,930 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-15 19:52:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:54,001 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-15 19:52:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:52:54,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-15 19:52:54,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:54,003 INFO L225 Difference]: With dead ends: 101 [2020-10-15 19:52:54,004 INFO L226 Difference]: Without dead ends: 96 [2020-10-15 19:52:54,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:52:54,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-15 19:52:54,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-15 19:52:54,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-15 19:52:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-15 19:52:54,012 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-15 19:52:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:54,013 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-15 19:52:54,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 19:52:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-15 19:52:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:52:54,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:54,014 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:54,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:54,229 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:54,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 3 times [2020-10-15 19:52:54,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:54,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385007303] [2020-10-15 19:52:54,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:54,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385007303] [2020-10-15 19:52:54,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524666607] [2020-10-15 19:52:54,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:54,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:52:54,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:54,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:52:54,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:54,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:54,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:54,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-15 19:52:54,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839927004] [2020-10-15 19:52:54,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:52:54,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:54,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:52:54,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:52:54,426 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-15 19:52:54,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:54,458 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-15 19:52:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:52:54,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-15 19:52:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:54,459 INFO L225 Difference]: With dead ends: 84 [2020-10-15 19:52:54,459 INFO L226 Difference]: Without dead ends: 81 [2020-10-15 19:52:54,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:52:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-15 19:52:54,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-15 19:52:54,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-15 19:52:54,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-15 19:52:54,467 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-15 19:52:54,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:54,468 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-15 19:52:54,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:52:54,468 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-15 19:52:54,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:52:54,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:54,469 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:54,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:54,684 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:54,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:54,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1003489542, now seen corresponding path program 4 times [2020-10-15 19:52:54,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:54,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636219346] [2020-10-15 19:52:54,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:54,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:54,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636219346] [2020-10-15 19:52:54,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012649936] [2020-10-15 19:52:54,746 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:54,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:52:54,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:54,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:52:54,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:54,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:54,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:54,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-15 19:52:54,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835654607] [2020-10-15 19:52:54,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:52:54,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:54,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:52:54,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:52:54,890 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-15 19:52:54,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:54,944 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-15 19:52:54,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 19:52:54,945 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-15 19:52:54,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:54,946 INFO L225 Difference]: With dead ends: 90 [2020-10-15 19:52:54,946 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 19:52:54,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-15 19:52:54,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 19:52:54,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-15 19:52:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-15 19:52:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-15 19:52:54,953 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-15 19:52:54,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:54,953 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-15 19:52:54,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:52:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-15 19:52:54,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 19:52:54,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:54,955 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:55,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:55,156 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:55,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:55,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1003511862, now seen corresponding path program 5 times [2020-10-15 19:52:55,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:55,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450915142] [2020-10-15 19:52:55,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:55,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:55,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450915142] [2020-10-15 19:52:55,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598855141] [2020-10-15 19:52:55,224 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:55,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:52:55,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:55,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:52:55,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:55,359 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:52:55,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:55,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:55,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-15 19:52:55,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737592783] [2020-10-15 19:52:55,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:52:55,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:55,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:52:55,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:52:55,390 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-15 19:52:55,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:55,489 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-15 19:52:55,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:52:55,490 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-15 19:52:55,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:55,491 INFO L225 Difference]: With dead ends: 99 [2020-10-15 19:52:55,491 INFO L226 Difference]: Without dead ends: 93 [2020-10-15 19:52:55,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:52:55,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-15 19:52:55,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-15 19:52:55,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-15 19:52:55,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-15 19:52:55,498 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-15 19:52:55,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:55,498 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-15 19:52:55,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:52:55,499 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-15 19:52:55,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:55,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:55,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:55,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:55,715 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:55,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:55,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times [2020-10-15 19:52:55,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:55,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277460800] [2020-10-15 19:52:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:55,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:55,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277460800] [2020-10-15 19:52:55,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:52:55,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 19:52:55,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641387364] [2020-10-15 19:52:55,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 19:52:55,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:55,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 19:52:55,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:52:55,776 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-15 19:52:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:55,805 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-15 19:52:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 19:52:55,805 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-15 19:52:55,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:55,806 INFO L225 Difference]: With dead ends: 92 [2020-10-15 19:52:55,807 INFO L226 Difference]: Without dead ends: 90 [2020-10-15 19:52:55,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:52:55,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-15 19:52:55,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-15 19:52:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-15 19:52:55,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-15 19:52:55,814 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-15 19:52:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:55,814 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-15 19:52:55,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 19:52:55,815 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-15 19:52:55,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:55,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:55,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:55,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 19:52:55,816 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:55,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:55,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times [2020-10-15 19:52:55,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:55,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504290596] [2020-10-15 19:52:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:55,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504290596] [2020-10-15 19:52:55,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:52:55,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 19:52:55,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740128162] [2020-10-15 19:52:55,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 19:52:55,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:55,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 19:52:55,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:52:55,926 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-15 19:52:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:55,989 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-15 19:52:55,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 19:52:55,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-15 19:52:55,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:55,991 INFO L225 Difference]: With dead ends: 100 [2020-10-15 19:52:55,991 INFO L226 Difference]: Without dead ends: 98 [2020-10-15 19:52:55,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 19:52:55,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-15 19:52:56,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-15 19:52:56,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-15 19:52:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-15 19:52:56,006 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-15 19:52:56,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:56,007 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-15 19:52:56,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 19:52:56,011 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-15 19:52:56,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:56,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:56,012 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:56,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 19:52:56,012 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:56,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1490550578, now seen corresponding path program 3 times [2020-10-15 19:52:56,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:56,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065792955] [2020-10-15 19:52:56,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:56,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065792955] [2020-10-15 19:52:56,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:52:56,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 19:52:56,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743123333] [2020-10-15 19:52:56,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 19:52:56,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:56,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 19:52:56,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:52:56,096 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-15 19:52:56,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:56,167 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-15 19:52:56,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:52:56,167 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-15 19:52:56,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:56,168 INFO L225 Difference]: With dead ends: 105 [2020-10-15 19:52:56,168 INFO L226 Difference]: Without dead ends: 100 [2020-10-15 19:52:56,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:52:56,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-15 19:52:56,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-15 19:52:56,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 19:52:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-15 19:52:56,180 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-15 19:52:56,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:56,181 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-15 19:52:56,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 19:52:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-15 19:52:56,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:56,182 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:56,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:56,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 19:52:56,186 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:56,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:56,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1490521748, now seen corresponding path program 4 times [2020-10-15 19:52:56,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:56,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804086] [2020-10-15 19:52:56,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:56,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:56,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804086] [2020-10-15 19:52:56,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 19:52:56,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 19:52:56,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596006253] [2020-10-15 19:52:56,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 19:52:56,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:56,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 19:52:56,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 19:52:56,264 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-15 19:52:56,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:56,338 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-15 19:52:56,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:52:56,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-15 19:52:56,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:56,340 INFO L225 Difference]: With dead ends: 105 [2020-10-15 19:52:56,340 INFO L226 Difference]: Without dead ends: 100 [2020-10-15 19:52:56,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:52:56,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-15 19:52:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-15 19:52:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-15 19:52:56,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-15 19:52:56,346 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-15 19:52:56,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:56,346 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-15 19:52:56,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 19:52:56,347 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-15 19:52:56,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:56,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:56,347 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:56,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 19:52:56,348 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:56,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:56,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times [2020-10-15 19:52:56,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:56,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361936071] [2020-10-15 19:52:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:56,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:56,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361936071] [2020-10-15 19:52:56,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635061408] [2020-10-15 19:52:56,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:56,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:52:56,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:56,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:52:56,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:56,568 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:52:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:56,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:56,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-15 19:52:56,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881439102] [2020-10-15 19:52:56,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 19:52:56,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:56,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 19:52:56,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:52:56,600 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-15 19:52:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:56,719 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-15 19:52:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:52:56,720 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-15 19:52:56,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:56,722 INFO L225 Difference]: With dead ends: 122 [2020-10-15 19:52:56,722 INFO L226 Difference]: Without dead ends: 117 [2020-10-15 19:52:56,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:52:56,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-15 19:52:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-15 19:52:56,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-15 19:52:56,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-15 19:52:56,728 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-15 19:52:56,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:56,729 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-15 19:52:56,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 19:52:56,729 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-15 19:52:56,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:56,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:56,730 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:56,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-15 19:52:56,945 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:56,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:56,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 6 times [2020-10-15 19:52:56,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:56,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81299168] [2020-10-15 19:52:56,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:57,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:57,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81299168] [2020-10-15 19:52:57,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658060037] [2020-10-15 19:52:57,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:57,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:52:57,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:57,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:52:57,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:57,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:57,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:57,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:52:57,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070731093] [2020-10-15 19:52:57,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:52:57,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:57,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:52:57,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:52:57,158 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-15 19:52:57,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:57,192 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-15 19:52:57,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 19:52:57,192 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-15 19:52:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:57,193 INFO L225 Difference]: With dead ends: 108 [2020-10-15 19:52:57,193 INFO L226 Difference]: Without dead ends: 105 [2020-10-15 19:52:57,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:52:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-15 19:52:57,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-15 19:52:57,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-15 19:52:57,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-15 19:52:57,198 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-15 19:52:57,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:57,198 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-15 19:52:57,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:52:57,199 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-15 19:52:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:57,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:57,199 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:57,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:57,411 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:57,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:57,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1043405416, now seen corresponding path program 7 times [2020-10-15 19:52:57,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:57,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786055996] [2020-10-15 19:52:57,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:57,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:57,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786055996] [2020-10-15 19:52:57,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488611420] [2020-10-15 19:52:57,485 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:57,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:57,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:52:57,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:57,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:57,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:57,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:52:57,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348099287] [2020-10-15 19:52:57,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:52:57,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:57,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:52:57,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:52:57,606 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-15 19:52:57,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:57,662 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-15 19:52:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 19:52:57,663 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-15 19:52:57,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:57,664 INFO L225 Difference]: With dead ends: 116 [2020-10-15 19:52:57,664 INFO L226 Difference]: Without dead ends: 113 [2020-10-15 19:52:57,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:52:57,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-15 19:52:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-15 19:52:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-15 19:52:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-15 19:52:57,669 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-15 19:52:57,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:57,670 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-15 19:52:57,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:52:57,670 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-15 19:52:57,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:57,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:57,671 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:57,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-15 19:52:57,884 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:57,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1044097336, now seen corresponding path program 8 times [2020-10-15 19:52:57,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:57,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771736082] [2020-10-15 19:52:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:57,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771736082] [2020-10-15 19:52:57,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266346166] [2020-10-15 19:52:57,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:58,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:52:58,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:58,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:52:58,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:58,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:58,109 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:52:58,109 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143216926] [2020-10-15 19:52:58,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:52:58,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:58,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:52:58,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:52:58,110 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-15 19:52:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:58,190 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-15 19:52:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:52:58,191 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-15 19:52:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:58,192 INFO L225 Difference]: With dead ends: 115 [2020-10-15 19:52:58,192 INFO L226 Difference]: Without dead ends: 112 [2020-10-15 19:52:58,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:52:58,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-15 19:52:58,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-15 19:52:58,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-15 19:52:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-15 19:52:58,198 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-15 19:52:58,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:58,199 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-15 19:52:58,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:52:58,199 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-15 19:52:58,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 19:52:58,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:58,200 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:58,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-15 19:52:58,414 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:58,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:58,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1044119656, now seen corresponding path program 9 times [2020-10-15 19:52:58,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:58,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935152870] [2020-10-15 19:52:58,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:58,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:58,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935152870] [2020-10-15 19:52:58,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117067601] [2020-10-15 19:52:58,467 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:58,507 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:52:58,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:58,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:52:58,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:58,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:52:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:58,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:58,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:52:58,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478440443] [2020-10-15 19:52:58,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:52:58,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:58,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:52:58,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:52:58,585 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-15 19:52:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:58,688 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-15 19:52:58,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:52:58,689 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-15 19:52:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:58,690 INFO L225 Difference]: With dead ends: 124 [2020-10-15 19:52:58,690 INFO L226 Difference]: Without dead ends: 118 [2020-10-15 19:52:58,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:52:58,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-15 19:52:58,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-15 19:52:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-15 19:52:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-15 19:52:58,695 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-15 19:52:58,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:58,695 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-15 19:52:58,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:52:58,696 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-15 19:52:58,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:52:58,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:58,696 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:58,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-15 19:52:58,908 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:58,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:58,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 5 times [2020-10-15 19:52:58,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:58,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055098778] [2020-10-15 19:52:58,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:58,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055098778] [2020-10-15 19:52:58,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476779313] [2020-10-15 19:52:58,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:59,026 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:52:59,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:59,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:52:59,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:59,106 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:59,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:52:59,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395825911] [2020-10-15 19:52:59,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:52:59,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:59,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:52:59,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:52:59,107 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-15 19:52:59,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:59,146 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-15 19:52:59,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 19:52:59,147 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:52:59,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:59,148 INFO L225 Difference]: With dead ends: 113 [2020-10-15 19:52:59,148 INFO L226 Difference]: Without dead ends: 111 [2020-10-15 19:52:59,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:52:59,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-15 19:52:59,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-15 19:52:59,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-15 19:52:59,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-15 19:52:59,152 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-15 19:52:59,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:59,152 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-15 19:52:59,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:52:59,152 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-15 19:52:59,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:52:59,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:59,153 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:59,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-15 19:52:59,364 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:59,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 6 times [2020-10-15 19:52:59,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:59,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124414385] [2020-10-15 19:52:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:59,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124414385] [2020-10-15 19:52:59,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672945579] [2020-10-15 19:52:59,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:59,470 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:52:59,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:52:59,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:52:59,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:52:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:59,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:52:59,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:52:59,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4393068] [2020-10-15 19:52:59,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:52:59,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:52:59,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:52:59,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:52:59,541 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-15 19:52:59,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:52:59,609 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-15 19:52:59,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 19:52:59,609 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:52:59,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:52:59,610 INFO L225 Difference]: With dead ends: 118 [2020-10-15 19:52:59,611 INFO L226 Difference]: Without dead ends: 116 [2020-10-15 19:52:59,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:52:59,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-15 19:52:59,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-15 19:52:59,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 19:52:59,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-15 19:52:59,615 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-15 19:52:59,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:52:59,615 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-15 19:52:59,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:52:59,615 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-15 19:52:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:52:59,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:52:59,616 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:52:59,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:59,817 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:52:59,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:52:59,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 7 times [2020-10-15 19:52:59,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:52:59,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93903304] [2020-10-15 19:52:59,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:52:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:52:59,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93903304] [2020-10-15 19:52:59,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862264017] [2020-10-15 19:52:59,885 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:52:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:52:59,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:52:59,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:00,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:00,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:00,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:00,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763092979] [2020-10-15 19:53:00,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:00,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:00,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:00,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:00,031 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-15 19:53:00,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:00,098 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-15 19:53:00,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 19:53:00,098 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:00,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:00,099 INFO L225 Difference]: With dead ends: 119 [2020-10-15 19:53:00,099 INFO L226 Difference]: Without dead ends: 117 [2020-10-15 19:53:00,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:00,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-15 19:53:00,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-15 19:53:00,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-15 19:53:00,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-15 19:53:00,104 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-15 19:53:00,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:00,104 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-15 19:53:00,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:00,104 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-15 19:53:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:00,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:00,105 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:00,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:00,314 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:00,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:00,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 8 times [2020-10-15 19:53:00,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:00,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160321395] [2020-10-15 19:53:00,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:00,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:00,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160321395] [2020-10-15 19:53:00,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430944013] [2020-10-15 19:53:00,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:00,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:00,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:00,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:00,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:00,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:00,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:00,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:00,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6777038] [2020-10-15 19:53:00,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:00,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:00,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:00,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:00,511 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-15 19:53:00,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:00,565 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-15 19:53:00,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 19:53:00,566 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:00,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:00,567 INFO L225 Difference]: With dead ends: 122 [2020-10-15 19:53:00,567 INFO L226 Difference]: Without dead ends: 120 [2020-10-15 19:53:00,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:53:00,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-15 19:53:00,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-15 19:53:00,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-15 19:53:00,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-15 19:53:00,571 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-15 19:53:00,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:00,573 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-15 19:53:00,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-15 19:53:00,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:00,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:00,574 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:00,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-15 19:53:00,775 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:00,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 9 times [2020-10-15 19:53:00,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:00,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135026793] [2020-10-15 19:53:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:00,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135026793] [2020-10-15 19:53:00,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204004947] [2020-10-15 19:53:00,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:00,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:00,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:00,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:00,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:00,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:00,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:00,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875031793] [2020-10-15 19:53:00,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:00,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:00,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:00,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:00,964 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-15 19:53:01,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:01,066 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-15 19:53:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:01,066 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:01,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:01,067 INFO L225 Difference]: With dead ends: 123 [2020-10-15 19:53:01,067 INFO L226 Difference]: Without dead ends: 121 [2020-10-15 19:53:01,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-15 19:53:01,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-15 19:53:01,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-15 19:53:01,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 19:53:01,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-15 19:53:01,072 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-15 19:53:01,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:01,072 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-15 19:53:01,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:01,072 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-15 19:53:01,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:01,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:01,073 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:01,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:01,274 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:01,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:01,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1037543233, now seen corresponding path program 10 times [2020-10-15 19:53:01,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:01,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799275719] [2020-10-15 19:53:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:01,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799275719] [2020-10-15 19:53:01,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000620286] [2020-10-15 19:53:01,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:01,373 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:01,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:01,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:01,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:01,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:01,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:01,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:01,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230618676] [2020-10-15 19:53:01,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:01,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:01,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:01,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:01,455 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-15 19:53:01,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:01,525 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-15 19:53:01,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:53:01,526 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:01,527 INFO L225 Difference]: With dead ends: 123 [2020-10-15 19:53:01,527 INFO L226 Difference]: Without dead ends: 121 [2020-10-15 19:53:01,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:01,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-15 19:53:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-15 19:53:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-15 19:53:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-15 19:53:01,532 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-15 19:53:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:01,532 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-15 19:53:01,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:01,532 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-15 19:53:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:01,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:01,533 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:01,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-15 19:53:01,734 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:01,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:01,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1037565553, now seen corresponding path program 11 times [2020-10-15 19:53:01,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:01,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783325444] [2020-10-15 19:53:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:01,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783325444] [2020-10-15 19:53:01,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973220401] [2020-10-15 19:53:01,815 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:01,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:01,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:01,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:01,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:01,930 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:01,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:01,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:01,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370036967] [2020-10-15 19:53:01,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:01,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:01,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:01,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:01,974 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-15 19:53:02,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:02,168 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-15 19:53:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:02,169 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:02,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:02,171 INFO L225 Difference]: With dead ends: 133 [2020-10-15 19:53:02,171 INFO L226 Difference]: Without dead ends: 128 [2020-10-15 19:53:02,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:02,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-15 19:53:02,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-15 19:53:02,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-15 19:53:02,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-15 19:53:02,193 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-15 19:53:02,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:02,196 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-15 19:53:02,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:02,196 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-15 19:53:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:02,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:02,197 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:02,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:02,409 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:02,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1037573024, now seen corresponding path program 12 times [2020-10-15 19:53:02,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:02,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899844494] [2020-10-15 19:53:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:02,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899844494] [2020-10-15 19:53:02,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548120552] [2020-10-15 19:53:02,510 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:02,568 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:02,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:02,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:02,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:02,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:02,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:02,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683240084] [2020-10-15 19:53:02,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:02,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:02,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:02,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:02,642 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-15 19:53:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:02,761 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-15 19:53:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:02,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:02,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:02,764 INFO L225 Difference]: With dead ends: 127 [2020-10-15 19:53:02,764 INFO L226 Difference]: Without dead ends: 125 [2020-10-15 19:53:02,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-15 19:53:02,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-15 19:53:02,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-15 19:53:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-15 19:53:02,769 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-15 19:53:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:02,769 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-15 19:53:02,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-15 19:53:02,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:02,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:02,770 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:02,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-15 19:53:02,980 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:02,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:02,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1037594383, now seen corresponding path program 13 times [2020-10-15 19:53:02,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:02,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52677036] [2020-10-15 19:53:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:02,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:03,034 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:03,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52677036] [2020-10-15 19:53:03,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356545766] [2020-10-15 19:53:03,034 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:03,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:03,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:03,132 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:03,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:03,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:03,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:03,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769731630] [2020-10-15 19:53:03,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:03,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:03,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:03,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:03,143 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-15 19:53:03,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:03,352 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-15 19:53:03,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:03,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:03,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:03,354 INFO L225 Difference]: With dead ends: 141 [2020-10-15 19:53:03,354 INFO L226 Difference]: Without dead ends: 136 [2020-10-15 19:53:03,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:53:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-15 19:53:03,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-15 19:53:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-15 19:53:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-15 19:53:03,360 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-15 19:53:03,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:03,360 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-15 19:53:03,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:03,360 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-15 19:53:03,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:03,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:03,361 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:03,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-15 19:53:03,566 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:03,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:03,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1037595344, now seen corresponding path program 14 times [2020-10-15 19:53:03,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:03,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813131390] [2020-10-15 19:53:03,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:03,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:03,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813131390] [2020-10-15 19:53:03,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085613565] [2020-10-15 19:53:03,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:03,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:03,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:03,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:03,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:03,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:03,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:03,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:03,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000489032] [2020-10-15 19:53:03,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:03,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:03,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:03,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:03,735 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-15 19:53:03,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:03,895 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-15 19:53:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:03,896 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:03,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:03,897 INFO L225 Difference]: With dead ends: 136 [2020-10-15 19:53:03,897 INFO L226 Difference]: Without dead ends: 131 [2020-10-15 19:53:03,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:03,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-15 19:53:03,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-15 19:53:03,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-15 19:53:03,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-15 19:53:03,902 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-15 19:53:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:03,903 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-15 19:53:03,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-15 19:53:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:03,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:03,904 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:04,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-15 19:53:04,116 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:04,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:04,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1037803664, now seen corresponding path program 15 times [2020-10-15 19:53:04,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:04,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902159492] [2020-10-15 19:53:04,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:04,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902159492] [2020-10-15 19:53:04,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441036492] [2020-10-15 19:53:04,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:04,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:04,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:04,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:04,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:04,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:04,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:04,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:04,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708608279] [2020-10-15 19:53:04,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:04,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:04,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:04,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:04,282 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-15 19:53:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:04,373 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-15 19:53:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:04,373 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:04,374 INFO L225 Difference]: With dead ends: 130 [2020-10-15 19:53:04,374 INFO L226 Difference]: Without dead ends: 128 [2020-10-15 19:53:04,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-15 19:53:04,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-15 19:53:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-15 19:53:04,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 19:53:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-15 19:53:04,381 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-15 19:53:04,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:04,381 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-15 19:53:04,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:04,381 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-15 19:53:04,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:04,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:04,382 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:04,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-15 19:53:04,583 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:04,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:04,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 16 times [2020-10-15 19:53:04,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:04,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168121764] [2020-10-15 19:53:04,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:04,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:04,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168121764] [2020-10-15 19:53:04,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435877603] [2020-10-15 19:53:04,630 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:04,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:04,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:04,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:04,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:04,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:04,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:04,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:04,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294632819] [2020-10-15 19:53:04,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:04,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:04,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:04,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:04,755 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-15 19:53:04,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:04,882 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-15 19:53:04,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:53:04,882 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:04,883 INFO L225 Difference]: With dead ends: 131 [2020-10-15 19:53:04,884 INFO L226 Difference]: Without dead ends: 129 [2020-10-15 19:53:04,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:53:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-15 19:53:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-15 19:53:04,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-15 19:53:04,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-15 19:53:04,888 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-15 19:53:04,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:04,889 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-15 19:53:04,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-15 19:53:04,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:04,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:04,889 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:05,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-15 19:53:05,098 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:05,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:05,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1038488113, now seen corresponding path program 17 times [2020-10-15 19:53:05,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:05,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407151584] [2020-10-15 19:53:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:05,149 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:05,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407151584] [2020-10-15 19:53:05,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638873476] [2020-10-15 19:53:05,150 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:05,189 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:05,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:05,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:05,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:05,248 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:05,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:05,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:05,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:05,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958563944] [2020-10-15 19:53:05,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:05,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:05,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:05,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:05,259 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-15 19:53:05,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:05,378 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-15 19:53:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:05,378 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:05,380 INFO L225 Difference]: With dead ends: 131 [2020-10-15 19:53:05,380 INFO L226 Difference]: Without dead ends: 126 [2020-10-15 19:53:05,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:05,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-15 19:53:05,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-15 19:53:05,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-15 19:53:05,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-15 19:53:05,385 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-15 19:53:05,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:05,385 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-15 19:53:05,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:05,385 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-15 19:53:05,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:05,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:05,386 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:05,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:05,599 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:05,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:05,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1038489074, now seen corresponding path program 18 times [2020-10-15 19:53:05,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:05,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72740177] [2020-10-15 19:53:05,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:05,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72740177] [2020-10-15 19:53:05,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145965500] [2020-10-15 19:53:05,653 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:05,702 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:05,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:05,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:05,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:05,777 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:05,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:05,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:05,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326212639] [2020-10-15 19:53:05,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:05,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:05,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:05,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:05,788 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-15 19:53:05,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:05,992 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-15 19:53:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:05,993 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:05,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:05,996 INFO L225 Difference]: With dead ends: 145 [2020-10-15 19:53:05,996 INFO L226 Difference]: Without dead ends: 140 [2020-10-15 19:53:05,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=249, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:53:05,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-15 19:53:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-15 19:53:06,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-15 19:53:06,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-15 19:53:06,001 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-15 19:53:06,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:06,001 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-15 19:53:06,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:06,002 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-15 19:53:06,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:06,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:06,002 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:06,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-15 19:53:06,206 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:06,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:06,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1038517904, now seen corresponding path program 19 times [2020-10-15 19:53:06,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:06,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710655513] [2020-10-15 19:53:06,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:06,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:06,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:06,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710655513] [2020-10-15 19:53:06,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823014421] [2020-10-15 19:53:06,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:06,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-15 19:53:06,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:06,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:06,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:06,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-15 19:53:06,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203605663] [2020-10-15 19:53:06,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:53:06,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:06,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:53:06,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:53:06,378 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-15 19:53:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:06,553 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-15 19:53:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:06,553 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-15 19:53:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:06,554 INFO L225 Difference]: With dead ends: 135 [2020-10-15 19:53:06,555 INFO L226 Difference]: Without dead ends: 130 [2020-10-15 19:53:06,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-15 19:53:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-15 19:53:06,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-15 19:53:06,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-15 19:53:06,558 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-15 19:53:06,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:06,559 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-15 19:53:06,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:53:06,559 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-15 19:53:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:06,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:06,559 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:06,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:06,768 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:06,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:06,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times [2020-10-15 19:53:06,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:06,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830856658] [2020-10-15 19:53:06,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:06,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830856658] [2020-10-15 19:53:06,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54313009] [2020-10-15 19:53:06,832 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:06,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:06,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:06,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:06,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:06,971 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:07,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:07,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-15 19:53:07,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756231135] [2020-10-15 19:53:07,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 19:53:07,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:07,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 19:53:07,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-15 19:53:07,016 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-15 19:53:07,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:07,131 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-15 19:53:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:07,132 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-15 19:53:07,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:07,133 INFO L225 Difference]: With dead ends: 143 [2020-10-15 19:53:07,133 INFO L226 Difference]: Without dead ends: 138 [2020-10-15 19:53:07,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-15 19:53:07,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-15 19:53:07,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-15 19:53:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-15 19:53:07,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-15 19:53:07,138 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-15 19:53:07,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:07,138 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-15 19:53:07,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 19:53:07,138 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-15 19:53:07,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:07,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:07,139 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:07,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-15 19:53:07,351 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:07,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:07,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 10 times [2020-10-15 19:53:07,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:07,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419311745] [2020-10-15 19:53:07,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:07,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419311745] [2020-10-15 19:53:07,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729015531] [2020-10-15 19:53:07,436 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:07,492 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:07,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:07,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:07,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:07,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:07,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:07,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709825116] [2020-10-15 19:53:07,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:07,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:07,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:07,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:07,592 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-15 19:53:07,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:07,633 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-15 19:53:07,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 19:53:07,633 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-15 19:53:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:07,634 INFO L225 Difference]: With dead ends: 132 [2020-10-15 19:53:07,634 INFO L226 Difference]: Without dead ends: 129 [2020-10-15 19:53:07,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:07,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-15 19:53:07,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-15 19:53:07,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 19:53:07,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-15 19:53:07,638 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-15 19:53:07,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:07,639 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-15 19:53:07,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:07,639 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-15 19:53:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:07,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:07,640 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:07,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-15 19:53:07,849 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:07,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2014169786, now seen corresponding path program 11 times [2020-10-15 19:53:07,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:07,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271366770] [2020-10-15 19:53:07,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:07,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271366770] [2020-10-15 19:53:07,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831968882] [2020-10-15 19:53:07,930 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:07,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:53:07,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:07,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:07,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:08,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:08,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:08,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690849901] [2020-10-15 19:53:08,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:08,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:08,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:08,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:08,063 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-15 19:53:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:08,122 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-15 19:53:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:53:08,122 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-15 19:53:08,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:08,123 INFO L225 Difference]: With dead ends: 143 [2020-10-15 19:53:08,123 INFO L226 Difference]: Without dead ends: 140 [2020-10-15 19:53:08,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-15 19:53:08,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-15 19:53:08,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-15 19:53:08,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 19:53:08,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-15 19:53:08,128 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-15 19:53:08,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:08,128 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-15 19:53:08,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:08,128 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-15 19:53:08,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:08,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:08,131 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:08,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-15 19:53:08,343 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:08,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:08,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1992720266, now seen corresponding path program 12 times [2020-10-15 19:53:08,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:08,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659288721] [2020-10-15 19:53:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:08,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659288721] [2020-10-15 19:53:08,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226888436] [2020-10-15 19:53:08,416 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:08,463 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:53:08,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:08,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:08,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:08,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:08,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:08,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:08,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625989660] [2020-10-15 19:53:08,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:08,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:08,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:08,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:08,552 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-15 19:53:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:08,628 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-15 19:53:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:08,629 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-15 19:53:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:08,630 INFO L225 Difference]: With dead ends: 142 [2020-10-15 19:53:08,630 INFO L226 Difference]: Without dead ends: 139 [2020-10-15 19:53:08,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:08,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-15 19:53:08,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-15 19:53:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-15 19:53:08,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-15 19:53:08,635 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-15 19:53:08,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:08,635 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-15 19:53:08,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-15 19:53:08,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:08,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:08,636 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:08,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-15 19:53:08,836 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:08,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:08,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1992028346, now seen corresponding path program 13 times [2020-10-15 19:53:08,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:08,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124762279] [2020-10-15 19:53:08,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:08,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124762279] [2020-10-15 19:53:08,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511562161] [2020-10-15 19:53:08,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:08,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:08,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:09,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:09,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:09,055 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:09,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583154688] [2020-10-15 19:53:09,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:09,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:09,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:09,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:09,056 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-15 19:53:09,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:09,152 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-15 19:53:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:09,153 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-15 19:53:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:09,153 INFO L225 Difference]: With dead ends: 141 [2020-10-15 19:53:09,154 INFO L226 Difference]: Without dead ends: 138 [2020-10-15 19:53:09,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:53:09,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-15 19:53:09,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-15 19:53:09,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-15 19:53:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-15 19:53:09,157 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-15 19:53:09,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:09,157 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-15 19:53:09,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-15 19:53:09,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-15 19:53:09,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:09,158 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:09,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-15 19:53:09,369 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:09,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:09,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1992006026, now seen corresponding path program 14 times [2020-10-15 19:53:09,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:09,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375545108] [2020-10-15 19:53:09,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:09,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375545108] [2020-10-15 19:53:09,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256561027] [2020-10-15 19:53:09,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:09,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:09,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:09,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:09,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:09,560 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:09,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:09,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:09,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:09,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849897888] [2020-10-15 19:53:09,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:09,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:09,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:09,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:09,574 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-15 19:53:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:09,722 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-15 19:53:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:09,723 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-15 19:53:09,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:09,724 INFO L225 Difference]: With dead ends: 150 [2020-10-15 19:53:09,724 INFO L226 Difference]: Without dead ends: 144 [2020-10-15 19:53:09,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-10-15 19:53:09,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-15 19:53:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-15 19:53:09,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-15 19:53:09,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-15 19:53:09,728 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-15 19:53:09,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:09,728 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-15 19:53:09,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:09,728 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-15 19:53:09,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:09,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:09,729 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:09,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:09,939 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:09,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:09,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 20 times [2020-10-15 19:53:09,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:09,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851577522] [2020-10-15 19:53:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:10,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851577522] [2020-10-15 19:53:10,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570923306] [2020-10-15 19:53:10,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:10,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:10,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:10,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:10,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:10,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:10,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:10,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896950014] [2020-10-15 19:53:10,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:10,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:10,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:10,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:10,154 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-15 19:53:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:10,200 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-15 19:53:10,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 19:53:10,201 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:10,202 INFO L225 Difference]: With dead ends: 138 [2020-10-15 19:53:10,202 INFO L226 Difference]: Without dead ends: 136 [2020-10-15 19:53:10,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:10,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-15 19:53:10,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-15 19:53:10,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-15 19:53:10,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-15 19:53:10,206 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-15 19:53:10,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:10,206 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-15 19:53:10,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-15 19:53:10,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:10,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:10,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:10,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-15 19:53:10,416 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:10,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:10,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 21 times [2020-10-15 19:53:10,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:10,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533556252] [2020-10-15 19:53:10,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:10,481 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:10,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533556252] [2020-10-15 19:53:10,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385974219] [2020-10-15 19:53:10,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:10,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:10,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:10,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:10,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:10,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:10,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:10,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639332722] [2020-10-15 19:53:10,631 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:10,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:10,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:10,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:10,632 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-15 19:53:10,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:10,742 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-15 19:53:10,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:53:10,743 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:10,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:10,745 INFO L225 Difference]: With dead ends: 145 [2020-10-15 19:53:10,745 INFO L226 Difference]: Without dead ends: 143 [2020-10-15 19:53:10,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:53:10,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-15 19:53:10,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-15 19:53:10,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-15 19:53:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-15 19:53:10,749 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-15 19:53:10,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:10,749 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-15 19:53:10,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-15 19:53:10,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:10,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:10,750 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:10,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-15 19:53:10,962 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:10,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:10,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 22 times [2020-10-15 19:53:10,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:10,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33798530] [2020-10-15 19:53:10,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:10,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:11,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33798530] [2020-10-15 19:53:11,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67874357] [2020-10-15 19:53:11,030 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:11,068 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:11,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:11,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:11,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:11,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:11,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:11,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:11,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562241584] [2020-10-15 19:53:11,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:11,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:11,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:11,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:11,169 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-15 19:53:11,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:11,314 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-15 19:53:11,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:11,315 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:11,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:11,316 INFO L225 Difference]: With dead ends: 150 [2020-10-15 19:53:11,316 INFO L226 Difference]: Without dead ends: 148 [2020-10-15 19:53:11,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-15 19:53:11,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-15 19:53:11,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 19:53:11,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-15 19:53:11,320 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-15 19:53:11,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:11,320 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-15 19:53:11,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:11,321 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-15 19:53:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:11,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:11,321 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:11,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:11,530 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:11,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 23 times [2020-10-15 19:53:11,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:11,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392222667] [2020-10-15 19:53:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:11,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:11,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392222667] [2020-10-15 19:53:11,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644881372] [2020-10-15 19:53:11,607 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:11,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:53:11,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:11,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:11,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:11,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:11,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:11,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846256028] [2020-10-15 19:53:11,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:11,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:11,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:11,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:11,738 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-15 19:53:11,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:11,850 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-15 19:53:11,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:11,850 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:11,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:11,851 INFO L225 Difference]: With dead ends: 148 [2020-10-15 19:53:11,851 INFO L226 Difference]: Without dead ends: 146 [2020-10-15 19:53:11,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-15 19:53:11,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-15 19:53:11,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 19:53:11,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-15 19:53:11,855 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-15 19:53:11,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:11,856 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-15 19:53:11,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-15 19:53:11,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:11,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:11,857 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:12,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-15 19:53:12,066 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:12,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:12,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 24 times [2020-10-15 19:53:12,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:12,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83240136] [2020-10-15 19:53:12,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:12,159 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:12,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83240136] [2020-10-15 19:53:12,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163241654] [2020-10-15 19:53:12,160 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:12,197 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:12,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:12,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:12,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:12,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:12,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:12,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:12,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938229755] [2020-10-15 19:53:12,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:12,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:12,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:12,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:12,286 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-15 19:53:12,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:12,406 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-15 19:53:12,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:12,406 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:12,408 INFO L225 Difference]: With dead ends: 149 [2020-10-15 19:53:12,408 INFO L226 Difference]: Without dead ends: 147 [2020-10-15 19:53:12,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:12,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-15 19:53:12,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-15 19:53:12,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 19:53:12,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-15 19:53:12,412 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-15 19:53:12,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:12,413 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-15 19:53:12,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:12,413 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-15 19:53:12,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:12,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:12,414 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:12,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:12,625 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:12,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:12,625 INFO L82 PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 25 times [2020-10-15 19:53:12,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:12,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913758338] [2020-10-15 19:53:12,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:12,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913758338] [2020-10-15 19:53:12,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [382795461] [2020-10-15 19:53:12,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:12,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:12,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:12,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:12,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:12,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:12,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422255129] [2020-10-15 19:53:12,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:12,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:12,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:12,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:12,859 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-15 19:53:12,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:12,927 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-15 19:53:12,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:53:12,927 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:12,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:12,929 INFO L225 Difference]: With dead ends: 152 [2020-10-15 19:53:12,929 INFO L226 Difference]: Without dead ends: 150 [2020-10-15 19:53:12,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-15 19:53:12,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-15 19:53:12,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-15 19:53:12,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-15 19:53:12,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-15 19:53:12,934 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-15 19:53:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:12,934 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-15 19:53:12,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:12,935 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-15 19:53:12,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:12,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:12,935 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:13,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-15 19:53:13,147 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:13,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:13,147 INFO L82 PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 26 times [2020-10-15 19:53:13,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:13,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116371418] [2020-10-15 19:53:13,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:13,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:13,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116371418] [2020-10-15 19:53:13,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170405971] [2020-10-15 19:53:13,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:13,268 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:13,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:13,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:13,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:13,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:13,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:13,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:13,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539667642] [2020-10-15 19:53:13,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:13,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:13,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:13,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:13,376 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-15 19:53:13,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:13,503 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-15 19:53:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:53:13,503 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:13,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:13,504 INFO L225 Difference]: With dead ends: 153 [2020-10-15 19:53:13,504 INFO L226 Difference]: Without dead ends: 151 [2020-10-15 19:53:13,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-15 19:53:13,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-15 19:53:13,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 19:53:13,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-15 19:53:13,511 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-15 19:53:13,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:13,511 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-15 19:53:13,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:13,511 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-15 19:53:13,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:13,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:13,512 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:13,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-15 19:53:13,713 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:13,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:13,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 27 times [2020-10-15 19:53:13,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:13,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368577002] [2020-10-15 19:53:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:13,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:13,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368577002] [2020-10-15 19:53:13,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960758087] [2020-10-15 19:53:13,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:13,822 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:13,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:13,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:13,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:13,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:13,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:13,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661304305] [2020-10-15 19:53:13,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:13,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:13,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:13,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:13,914 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-15 19:53:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:14,069 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-15 19:53:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:53:14,069 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:14,071 INFO L225 Difference]: With dead ends: 156 [2020-10-15 19:53:14,071 INFO L226 Difference]: Without dead ends: 154 [2020-10-15 19:53:14,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-15 19:53:14,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-15 19:53:14,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-15 19:53:14,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-15 19:53:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-15 19:53:14,076 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-15 19:53:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:14,076 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-15 19:53:14,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-15 19:53:14,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:14,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:14,077 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:14,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-15 19:53:14,280 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:14,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:14,280 INFO L82 PathProgramCache]: Analyzing trace with hash 2099068876, now seen corresponding path program 28 times [2020-10-15 19:53:14,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:14,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596533611] [2020-10-15 19:53:14,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:14,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596533611] [2020-10-15 19:53:14,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189114703] [2020-10-15 19:53:14,353 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:14,397 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:14,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:14,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:14,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:14,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:14,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:14,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:14,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581363995] [2020-10-15 19:53:14,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:14,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:14,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:14,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:14,488 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-15 19:53:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:14,582 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-15 19:53:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:14,583 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:14,584 INFO L225 Difference]: With dead ends: 148 [2020-10-15 19:53:14,584 INFO L226 Difference]: Without dead ends: 146 [2020-10-15 19:53:14,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-15 19:53:14,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-15 19:53:14,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-15 19:53:14,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-15 19:53:14,589 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-15 19:53:14,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:14,590 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-15 19:53:14,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:14,590 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-15 19:53:14,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:14,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:14,591 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:14,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-15 19:53:14,802 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash 2099069837, now seen corresponding path program 29 times [2020-10-15 19:53:14,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:14,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900994055] [2020-10-15 19:53:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:14,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900994055] [2020-10-15 19:53:14,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084845374] [2020-10-15 19:53:14,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:14,910 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:14,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:14,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:14,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:15,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:15,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:15,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:15,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871793750] [2020-10-15 19:53:15,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:15,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:15,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:15,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:15,019 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-15 19:53:15,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:15,167 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-15 19:53:15,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:15,168 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:15,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:15,170 INFO L225 Difference]: With dead ends: 157 [2020-10-15 19:53:15,170 INFO L226 Difference]: Without dead ends: 155 [2020-10-15 19:53:15,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-15 19:53:15,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-15 19:53:15,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-15 19:53:15,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 19:53:15,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-15 19:53:15,174 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-15 19:53:15,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:15,174 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-15 19:53:15,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:15,174 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-15 19:53:15,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:15,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:15,175 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:15,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:15,376 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:15,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:15,376 INFO L82 PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 30 times [2020-10-15 19:53:15,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:15,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575544936] [2020-10-15 19:53:15,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:15,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:15,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:15,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575544936] [2020-10-15 19:53:15,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698362846] [2020-10-15 19:53:15,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:15,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:15,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:15,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:53:15,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:15,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:15,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-15 19:53:15,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701025297] [2020-10-15 19:53:15,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 19:53:15,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 19:53:15,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-15 19:53:15,532 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-15 19:53:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:15,617 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-15 19:53:15,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:15,618 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-15 19:53:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:15,619 INFO L225 Difference]: With dead ends: 149 [2020-10-15 19:53:15,619 INFO L226 Difference]: Without dead ends: 147 [2020-10-15 19:53:15,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-10-15 19:53:15,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-15 19:53:15,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-15 19:53:15,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-15 19:53:15,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-15 19:53:15,623 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-15 19:53:15,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:15,624 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-15 19:53:15,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 19:53:15,624 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-15 19:53:15,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:15,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:15,625 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:15,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-15 19:53:15,834 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:15,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:15,834 INFO L82 PathProgramCache]: Analyzing trace with hash 2099754286, now seen corresponding path program 31 times [2020-10-15 19:53:15,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:15,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688979195] [2020-10-15 19:53:15,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:15,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:15,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688979195] [2020-10-15 19:53:15,889 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088651067] [2020-10-15 19:53:15,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:15,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:15,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:16,009 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:16,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:16,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:16,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:16,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455250771] [2020-10-15 19:53:16,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:16,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:16,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:16,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:16,045 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-15 19:53:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:16,293 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-15 19:53:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:16,294 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:16,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:16,295 INFO L225 Difference]: With dead ends: 164 [2020-10-15 19:53:16,296 INFO L226 Difference]: Without dead ends: 159 [2020-10-15 19:53:16,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:16,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-15 19:53:16,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-15 19:53:16,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-15 19:53:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-15 19:53:16,299 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-15 19:53:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:16,299 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-15 19:53:16,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:16,300 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-15 19:53:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:16,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:16,300 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:16,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-15 19:53:16,502 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:16,502 INFO L82 PathProgramCache]: Analyzing trace with hash 2099761757, now seen corresponding path program 32 times [2020-10-15 19:53:16,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:16,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613113407] [2020-10-15 19:53:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:16,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:16,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613113407] [2020-10-15 19:53:16,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380536921] [2020-10-15 19:53:16,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:16,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:16,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:16,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:16,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:16,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:16,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:16,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399585281] [2020-10-15 19:53:16,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:16,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:16,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:16,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:16,707 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-15 19:53:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:16,895 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-15 19:53:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:53:16,895 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:16,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:16,896 INFO L225 Difference]: With dead ends: 156 [2020-10-15 19:53:16,897 INFO L226 Difference]: Without dead ends: 154 [2020-10-15 19:53:16,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-15 19:53:16,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-15 19:53:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-15 19:53:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-15 19:53:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-15 19:53:16,900 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-15 19:53:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:16,901 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-15 19:53:16,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-15 19:53:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:16,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:16,902 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:17,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:17,112 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:17,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:17,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2099783116, now seen corresponding path program 33 times [2020-10-15 19:53:17,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:17,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725956936] [2020-10-15 19:53:17,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:17,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:17,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725956936] [2020-10-15 19:53:17,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822594794] [2020-10-15 19:53:17,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:17,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:17,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:17,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:17,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:17,378 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:17,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:17,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:17,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:17,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765732583] [2020-10-15 19:53:17,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:17,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:17,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:17,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:17,422 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-15 19:53:17,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:17,884 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-15 19:53:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:53:17,885 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:17,887 INFO L225 Difference]: With dead ends: 176 [2020-10-15 19:53:17,887 INFO L226 Difference]: Without dead ends: 171 [2020-10-15 19:53:17,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:53:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-15 19:53:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-15 19:53:17,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-15 19:53:17,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-15 19:53:17,894 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-15 19:53:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:17,895 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-15 19:53:17,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-15 19:53:17,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:17,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:17,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:18,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-15 19:53:18,111 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:18,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:18,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2099784077, now seen corresponding path program 34 times [2020-10-15 19:53:18,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:18,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99993296] [2020-10-15 19:53:18,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:18,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99993296] [2020-10-15 19:53:18,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201977221] [2020-10-15 19:53:18,202 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:18,257 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:18,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:18,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:18,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:18,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:18,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:18,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:18,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:18,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276347024] [2020-10-15 19:53:18,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:18,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:18,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:18,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:18,376 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-15 19:53:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:18,608 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-15 19:53:18,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:18,608 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:18,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:18,609 INFO L225 Difference]: With dead ends: 166 [2020-10-15 19:53:18,609 INFO L226 Difference]: Without dead ends: 161 [2020-10-15 19:53:18,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:18,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-15 19:53:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-15 19:53:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-15 19:53:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-15 19:53:18,614 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-15 19:53:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:18,614 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-15 19:53:18,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-15 19:53:18,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:18,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:18,615 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:18,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:18,826 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:18,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:18,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2099992397, now seen corresponding path program 35 times [2020-10-15 19:53:18,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:18,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282284069] [2020-10-15 19:53:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:18,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:18,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282284069] [2020-10-15 19:53:18,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637983868] [2020-10-15 19:53:18,881 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:18,916 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:18,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:18,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:18,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:19,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:19,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:19,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852035540] [2020-10-15 19:53:19,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:19,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:19,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:19,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:19,004 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-15 19:53:19,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:19,182 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-15 19:53:19,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:19,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:19,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:19,183 INFO L225 Difference]: With dead ends: 163 [2020-10-15 19:53:19,183 INFO L226 Difference]: Without dead ends: 161 [2020-10-15 19:53:19,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-15 19:53:19,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-15 19:53:19,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-15 19:53:19,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-15 19:53:19,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-15 19:53:19,187 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-15 19:53:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:19,187 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-15 19:53:19,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-15 19:53:19,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:19,188 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:19,188 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:19,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-15 19:53:19,396 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:19,396 INFO L82 PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 36 times [2020-10-15 19:53:19,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:19,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579876281] [2020-10-15 19:53:19,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:19,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579876281] [2020-10-15 19:53:19,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458078958] [2020-10-15 19:53:19,456 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:19,493 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:19,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:19,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:19,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:19,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:19,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:19,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005978967] [2020-10-15 19:53:19,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:19,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:19,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:19,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:19,588 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-15 19:53:19,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:19,842 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-15 19:53:19,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:53:19,843 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:19,844 INFO L225 Difference]: With dead ends: 170 [2020-10-15 19:53:19,844 INFO L226 Difference]: Without dead ends: 168 [2020-10-15 19:53:19,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-15 19:53:19,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-15 19:53:19,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-15 19:53:19,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-15 19:53:19,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-15 19:53:19,848 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-15 19:53:19,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:19,848 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-15 19:53:19,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:19,848 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-15 19:53:19,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:19,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:19,849 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:20,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:20,059 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:20,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:20,059 INFO L82 PathProgramCache]: Analyzing trace with hash 2100676846, now seen corresponding path program 37 times [2020-10-15 19:53:20,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:20,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896862646] [2020-10-15 19:53:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:20,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896862646] [2020-10-15 19:53:20,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515619150] [2020-10-15 19:53:20,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:20,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:20,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:20,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:20,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:20,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:20,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262442186] [2020-10-15 19:53:20,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:20,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:20,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:20,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:20,272 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-15 19:53:20,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:20,574 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-15 19:53:20,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:53:20,575 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:20,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:20,577 INFO L225 Difference]: With dead ends: 177 [2020-10-15 19:53:20,577 INFO L226 Difference]: Without dead ends: 172 [2020-10-15 19:53:20,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:53:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-15 19:53:20,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-15 19:53:20,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-15 19:53:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-15 19:53:20,582 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-15 19:53:20,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:20,582 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-15 19:53:20,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-15 19:53:20,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:20,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:20,583 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:20,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-15 19:53:20,796 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:20,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:20,796 INFO L82 PathProgramCache]: Analyzing trace with hash 2100677807, now seen corresponding path program 38 times [2020-10-15 19:53:20,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:20,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547214228] [2020-10-15 19:53:20,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:20,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547214228] [2020-10-15 19:53:20,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572330082] [2020-10-15 19:53:20,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:20,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:20,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:20,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:20,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:20,972 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:20,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:20,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:20,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825378760] [2020-10-15 19:53:20,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:20,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:20,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:20,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:20,980 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-15 19:53:21,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:21,356 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-15 19:53:21,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 19:53:21,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:21,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:21,358 INFO L225 Difference]: With dead ends: 190 [2020-10-15 19:53:21,358 INFO L226 Difference]: Without dead ends: 182 [2020-10-15 19:53:21,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:53:21,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-15 19:53:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-15 19:53:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-15 19:53:21,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-15 19:53:21,362 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-15 19:53:21,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:21,362 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-15 19:53:21,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:21,363 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-15 19:53:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:21,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:21,363 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:21,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-15 19:53:21,574 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:21,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:21,574 INFO L82 PathProgramCache]: Analyzing trace with hash 2100706637, now seen corresponding path program 39 times [2020-10-15 19:53:21,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:21,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409385778] [2020-10-15 19:53:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:21,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:21,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409385778] [2020-10-15 19:53:21,629 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433573259] [2020-10-15 19:53:21,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:21,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:53:21,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:21,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:21,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:21,743 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:21,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:21,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:21,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:21,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462322964] [2020-10-15 19:53:21,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:21,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:21,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:21,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:21,754 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-15 19:53:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:22,107 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-15 19:53:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:53:22,108 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:22,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:22,110 INFO L225 Difference]: With dead ends: 180 [2020-10-15 19:53:22,110 INFO L226 Difference]: Without dead ends: 175 [2020-10-15 19:53:22,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:53:22,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-15 19:53:22,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-15 19:53:22,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 19:53:22,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-15 19:53:22,114 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-15 19:53:22,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:22,114 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-15 19:53:22,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:22,114 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-15 19:53:22,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:22,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:22,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:22,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-15 19:53:22,325 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash 2107142237, now seen corresponding path program 40 times [2020-10-15 19:53:22,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:22,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885996852] [2020-10-15 19:53:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:22,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:22,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885996852] [2020-10-15 19:53:22,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800939507] [2020-10-15 19:53:22,386 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:22,423 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:22,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:22,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:22,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:22,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:22,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:22,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:22,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499036460] [2020-10-15 19:53:22,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:22,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:22,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:22,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:22,514 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-15 19:53:22,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:22,668 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-15 19:53:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:22,669 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:22,670 INFO L225 Difference]: With dead ends: 164 [2020-10-15 19:53:22,670 INFO L226 Difference]: Without dead ends: 162 [2020-10-15 19:53:22,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2020-10-15 19:53:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-15 19:53:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-15 19:53:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-15 19:53:22,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-15 19:53:22,674 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-15 19:53:22,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:22,675 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-15 19:53:22,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:22,675 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-15 19:53:22,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:22,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:22,675 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:22,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-15 19:53:22,876 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:22,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash 2107143198, now seen corresponding path program 41 times [2020-10-15 19:53:22,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:22,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533414164] [2020-10-15 19:53:22,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:22,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:22,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533414164] [2020-10-15 19:53:22,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993492909] [2020-10-15 19:53:22,953 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:23,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:23,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:23,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:23,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:23,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:23,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:23,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20223353] [2020-10-15 19:53:23,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:23,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:23,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:23,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:23,153 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-15 19:53:23,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:23,289 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-15 19:53:23,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:53:23,289 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:23,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:23,291 INFO L225 Difference]: With dead ends: 161 [2020-10-15 19:53:23,291 INFO L226 Difference]: Without dead ends: 159 [2020-10-15 19:53:23,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-15 19:53:23,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-15 19:53:23,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-15 19:53:23,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 19:53:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-15 19:53:23,295 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-15 19:53:23,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:23,295 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-15 19:53:23,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-15 19:53:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:23,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:23,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:23,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-15 19:53:23,506 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:23,507 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 42 times [2020-10-15 19:53:23,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:23,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055172260] [2020-10-15 19:53:23,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:23,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:23,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055172260] [2020-10-15 19:53:23,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104133740] [2020-10-15 19:53:23,560 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:23,603 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:53:23,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:23,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:23,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:23,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:23,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:23,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544502049] [2020-10-15 19:53:23,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:23,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:23,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:23,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:23,698 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-15 19:53:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:23,893 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-15 19:53:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:53:23,893 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:23,895 INFO L225 Difference]: With dead ends: 165 [2020-10-15 19:53:23,895 INFO L226 Difference]: Without dead ends: 163 [2020-10-15 19:53:23,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:53:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-15 19:53:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-15 19:53:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 19:53:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-15 19:53:23,898 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-15 19:53:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:23,898 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-15 19:53:23,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-15 19:53:23,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:23,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:23,899 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:24,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-15 19:53:24,101 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 43 times [2020-10-15 19:53:24,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:24,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102090223] [2020-10-15 19:53:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:24,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102090223] [2020-10-15 19:53:24,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546287712] [2020-10-15 19:53:24,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:24,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:24,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:24,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:24,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:24,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:24,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036141459] [2020-10-15 19:53:24,296 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:24,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:24,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:24,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:24,297 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-15 19:53:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:24,497 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-15 19:53:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:53:24,497 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:24,499 INFO L225 Difference]: With dead ends: 167 [2020-10-15 19:53:24,499 INFO L226 Difference]: Without dead ends: 165 [2020-10-15 19:53:24,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:53:24,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-15 19:53:24,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-15 19:53:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 19:53:24,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-15 19:53:24,503 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-15 19:53:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:24,504 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-15 19:53:24,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-15 19:53:24,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:24,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:24,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:24,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:24,708 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:24,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:24,708 INFO L82 PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 44 times [2020-10-15 19:53:24,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:24,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336115647] [2020-10-15 19:53:24,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:24,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336115647] [2020-10-15 19:53:24,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902855844] [2020-10-15 19:53:24,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:24,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:24,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:24,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:24,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:24,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:24,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:24,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:24,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597311687] [2020-10-15 19:53:24,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:24,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:24,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:24,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:24,916 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-15 19:53:25,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:25,182 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-15 19:53:25,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:53:25,182 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:25,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:25,184 INFO L225 Difference]: With dead ends: 168 [2020-10-15 19:53:25,184 INFO L226 Difference]: Without dead ends: 166 [2020-10-15 19:53:25,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:53:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-15 19:53:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-15 19:53:25,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 19:53:25,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-15 19:53:25,189 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-15 19:53:25,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:25,189 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-15 19:53:25,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:25,189 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-15 19:53:25,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:25,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:25,190 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:25,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:25,395 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:25,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:25,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2128382476, now seen corresponding path program 45 times [2020-10-15 19:53:25,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:25,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707250853] [2020-10-15 19:53:25,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:25,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:25,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707250853] [2020-10-15 19:53:25,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247448933] [2020-10-15 19:53:25,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:25,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:25,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:25,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:25,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:25,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:25,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:25,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:25,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:25,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663270397] [2020-10-15 19:53:25,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:25,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:25,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:25,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:25,575 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-15 19:53:25,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:25,789 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-15 19:53:25,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:25,790 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:25,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:25,791 INFO L225 Difference]: With dead ends: 160 [2020-10-15 19:53:25,792 INFO L226 Difference]: Without dead ends: 155 [2020-10-15 19:53:25,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:25,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-15 19:53:25,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-15 19:53:25,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-15 19:53:25,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-15 19:53:25,795 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-15 19:53:25,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:25,795 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-15 19:53:25,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:25,795 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-15 19:53:25,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:25,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:25,796 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:26,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:26,005 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:26,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:26,005 INFO L82 PathProgramCache]: Analyzing trace with hash 2128383437, now seen corresponding path program 46 times [2020-10-15 19:53:26,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:26,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610738039] [2020-10-15 19:53:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:26,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:26,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610738039] [2020-10-15 19:53:26,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649525497] [2020-10-15 19:53:26,061 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:26,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:26,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:26,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:26,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:26,173 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:26,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:26,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:26,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:26,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586427240] [2020-10-15 19:53:26,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:26,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:26,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:26,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:26,208 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-15 19:53:26,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:26,551 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-15 19:53:26,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:53:26,552 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:26,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:26,554 INFO L225 Difference]: With dead ends: 189 [2020-10-15 19:53:26,555 INFO L226 Difference]: Without dead ends: 181 [2020-10-15 19:53:26,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:53:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-15 19:53:26,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-15 19:53:26,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 19:53:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-15 19:53:26,558 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-15 19:53:26,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:26,559 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-15 19:53:26,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:26,559 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-15 19:53:26,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:26,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:26,559 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:26,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:26,765 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:26,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:26,765 INFO L82 PathProgramCache]: Analyzing trace with hash 2128390908, now seen corresponding path program 47 times [2020-10-15 19:53:26,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:26,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162888388] [2020-10-15 19:53:26,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:26,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162888388] [2020-10-15 19:53:26,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769875912] [2020-10-15 19:53:26,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:26,865 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:26,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:26,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:26,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:26,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:26,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:26,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946429423] [2020-10-15 19:53:26,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:26,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:26,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:26,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:26,951 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-15 19:53:27,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:27,204 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-15 19:53:27,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:53:27,204 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:27,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:27,206 INFO L225 Difference]: With dead ends: 169 [2020-10-15 19:53:27,206 INFO L226 Difference]: Without dead ends: 167 [2020-10-15 19:53:27,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:53:27,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-15 19:53:27,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-15 19:53:27,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-15 19:53:27,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-15 19:53:27,210 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-15 19:53:27,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:27,211 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-15 19:53:27,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:27,211 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-15 19:53:27,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:27,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:27,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:27,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-15 19:53:27,413 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:27,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:27,414 INFO L82 PathProgramCache]: Analyzing trace with hash 2128412267, now seen corresponding path program 48 times [2020-10-15 19:53:27,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:27,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926283396] [2020-10-15 19:53:27,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:27,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926283396] [2020-10-15 19:53:27,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977394115] [2020-10-15 19:53:27,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:27,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:27,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:27,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:27,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:27,582 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:27,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:27,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:27,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:27,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884543383] [2020-10-15 19:53:27,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:27,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:27,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:27,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:27,592 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-15 19:53:27,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:27,936 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-15 19:53:27,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 19:53:27,937 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:27,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:27,939 INFO L225 Difference]: With dead ends: 192 [2020-10-15 19:53:27,939 INFO L226 Difference]: Without dead ends: 184 [2020-10-15 19:53:27,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:53:27,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-15 19:53:27,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-15 19:53:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-15 19:53:27,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-15 19:53:27,943 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-15 19:53:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:27,944 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-15 19:53:27,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:27,944 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-15 19:53:27,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:27,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:27,945 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:28,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:28,155 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:28,155 INFO L82 PathProgramCache]: Analyzing trace with hash 2128413228, now seen corresponding path program 49 times [2020-10-15 19:53:28,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:28,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186582110] [2020-10-15 19:53:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:28,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186582110] [2020-10-15 19:53:28,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148398657] [2020-10-15 19:53:28,213 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:28,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-15 19:53:28,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:28,322 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:28,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:28,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-15 19:53:28,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874285283] [2020-10-15 19:53:28,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 19:53:28,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:28,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 19:53:28,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 19:53:28,336 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-15 19:53:28,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:28,693 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-15 19:53:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:53:28,694 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-15 19:53:28,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:28,695 INFO L225 Difference]: With dead ends: 180 [2020-10-15 19:53:28,695 INFO L226 Difference]: Without dead ends: 175 [2020-10-15 19:53:28,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:53:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-15 19:53:28,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-15 19:53:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-15 19:53:28,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-15 19:53:28,700 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-15 19:53:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:28,700 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-15 19:53:28,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 19:53:28,700 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-15 19:53:28,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:28,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:28,701 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:28,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-15 19:53:28,904 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:28,904 INFO L82 PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times [2020-10-15 19:53:28,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:28,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236370168] [2020-10-15 19:53:28,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:28,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:28,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236370168] [2020-10-15 19:53:28,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558932803] [2020-10-15 19:53:28,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:29,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:53:29,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:29,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:29,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:29,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:29,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:29,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:29,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:53:29,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127851638] [2020-10-15 19:53:29,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:53:29,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:29,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:53:29,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:53:29,155 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-15 19:53:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:29,308 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-15 19:53:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:29,309 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-15 19:53:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:29,311 INFO L225 Difference]: With dead ends: 164 [2020-10-15 19:53:29,311 INFO L226 Difference]: Without dead ends: 159 [2020-10-15 19:53:29,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-10-15 19:53:29,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-15 19:53:29,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-15 19:53:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-15 19:53:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-15 19:53:29,314 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-15 19:53:29,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:29,314 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-15 19:53:29,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:53:29,314 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-15 19:53:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:29,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:29,315 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:29,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:29,516 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:29,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:29,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 15 times [2020-10-15 19:53:29,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:29,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909531426] [2020-10-15 19:53:29,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:29,637 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:29,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909531426] [2020-10-15 19:53:29,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697848937] [2020-10-15 19:53:29,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:29,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:53:29,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:29,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:29,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:29,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:29,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:29,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269197986] [2020-10-15 19:53:29,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:29,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:29,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:29,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:29,800 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-15 19:53:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:29,854 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-15 19:53:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:53:29,854 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-15 19:53:29,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:29,856 INFO L225 Difference]: With dead ends: 156 [2020-10-15 19:53:29,856 INFO L226 Difference]: Without dead ends: 153 [2020-10-15 19:53:29,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:29,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-15 19:53:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-15 19:53:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-15 19:53:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-15 19:53:29,861 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-15 19:53:29,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:29,861 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-15 19:53:29,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-15 19:53:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:29,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:29,862 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:30,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-15 19:53:30,074 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:30,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1985246760, now seen corresponding path program 16 times [2020-10-15 19:53:30,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:30,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446527922] [2020-10-15 19:53:30,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:30,182 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:30,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446527922] [2020-10-15 19:53:30,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468487543] [2020-10-15 19:53:30,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:30,222 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:30,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:30,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:30,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:30,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:30,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:30,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405932491] [2020-10-15 19:53:30,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:30,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:30,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:30,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:30,351 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-15 19:53:30,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:30,414 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-15 19:53:30,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:30,415 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-15 19:53:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:30,416 INFO L225 Difference]: With dead ends: 170 [2020-10-15 19:53:30,416 INFO L226 Difference]: Without dead ends: 167 [2020-10-15 19:53:30,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:53:30,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-15 19:53:30,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-15 19:53:30,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-15 19:53:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-15 19:53:30,420 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-15 19:53:30,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:30,420 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-15 19:53:30,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:30,421 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-15 19:53:30,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:30,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:30,421 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:30,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:30,631 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:30,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:30,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1644785416, now seen corresponding path program 17 times [2020-10-15 19:53:30,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:30,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360937658] [2020-10-15 19:53:30,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:30,728 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:30,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360937658] [2020-10-15 19:53:30,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817403794] [2020-10-15 19:53:30,728 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:30,788 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:53:30,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:30,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:30,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:30,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:30,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:30,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846651851] [2020-10-15 19:53:30,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:30,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:30,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:30,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:30,966 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-15 19:53:31,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:31,083 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-15 19:53:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:31,084 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-15 19:53:31,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:31,085 INFO L225 Difference]: With dead ends: 169 [2020-10-15 19:53:31,086 INFO L226 Difference]: Without dead ends: 166 [2020-10-15 19:53:31,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-15 19:53:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-15 19:53:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-15 19:53:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-15 19:53:31,091 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-15 19:53:31,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:31,092 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-15 19:53:31,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-15 19:53:31,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:31,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:31,093 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:31,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:31,305 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:31,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:31,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1623335896, now seen corresponding path program 18 times [2020-10-15 19:53:31,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:31,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748945478] [2020-10-15 19:53:31,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:31,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:31,402 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:31,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748945478] [2020-10-15 19:53:31,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37329871] [2020-10-15 19:53:31,403 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:31,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:53:31,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:31,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:31,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:31,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:31,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:31,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653387658] [2020-10-15 19:53:31,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:31,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:31,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:31,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:31,569 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-15 19:53:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:31,675 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-15 19:53:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:53:31,676 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-15 19:53:31,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:31,677 INFO L225 Difference]: With dead ends: 168 [2020-10-15 19:53:31,677 INFO L226 Difference]: Without dead ends: 165 [2020-10-15 19:53:31,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-15 19:53:31,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-15 19:53:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-15 19:53:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-15 19:53:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-15 19:53:31,681 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-15 19:53:31,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:31,682 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-15 19:53:31,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:31,682 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-15 19:53:31,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:31,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:31,683 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:31,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-15 19:53:31,892 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:31,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1622643976, now seen corresponding path program 19 times [2020-10-15 19:53:31,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:31,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131164747] [2020-10-15 19:53:31,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:31,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131164747] [2020-10-15 19:53:31,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152647890] [2020-10-15 19:53:31,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:32,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:32,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:32,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:32,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:32,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698645830] [2020-10-15 19:53:32,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:32,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:32,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:32,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:32,150 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-15 19:53:32,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:32,286 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-15 19:53:32,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:32,287 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-15 19:53:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:32,288 INFO L225 Difference]: With dead ends: 167 [2020-10-15 19:53:32,288 INFO L226 Difference]: Without dead ends: 164 [2020-10-15 19:53:32,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-15 19:53:32,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-15 19:53:32,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-15 19:53:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-15 19:53:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-15 19:53:32,294 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-15 19:53:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:32,295 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-15 19:53:32,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:32,295 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-15 19:53:32,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 19:53:32,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:32,295 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:32,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:32,496 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:32,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:32,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1622621656, now seen corresponding path program 20 times [2020-10-15 19:53:32,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:32,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654809442] [2020-10-15 19:53:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:32,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:32,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654809442] [2020-10-15 19:53:32,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48682784] [2020-10-15 19:53:32,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:32,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:32,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:32,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:32,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:32,704 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:32,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:32,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:32,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:32,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2154875] [2020-10-15 19:53:32,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:32,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:32,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:32,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:32,724 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-15 19:53:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:32,928 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-15 19:53:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:32,929 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-15 19:53:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:32,930 INFO L225 Difference]: With dead ends: 176 [2020-10-15 19:53:32,930 INFO L226 Difference]: Without dead ends: 170 [2020-10-15 19:53:32,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:32,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-15 19:53:32,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-15 19:53:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-15 19:53:32,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-15 19:53:32,935 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-15 19:53:32,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:32,935 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-15 19:53:32,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-15 19:53:32,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:32,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:32,937 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:33,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:33,137 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:33,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:33,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 50 times [2020-10-15 19:53:33,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:33,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081319426] [2020-10-15 19:53:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:33,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:33,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081319426] [2020-10-15 19:53:33,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310014498] [2020-10-15 19:53:33,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:33,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:33,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:33,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:33,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:33,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:33,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:33,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:33,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732903789] [2020-10-15 19:53:33,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:33,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:33,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:33,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:33,500 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-15 19:53:33,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:33,580 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-15 19:53:33,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 19:53:33,580 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:33,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:33,582 INFO L225 Difference]: With dead ends: 163 [2020-10-15 19:53:33,582 INFO L226 Difference]: Without dead ends: 161 [2020-10-15 19:53:33,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:33,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-15 19:53:33,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-15 19:53:33,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-15 19:53:33,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-15 19:53:33,588 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-15 19:53:33,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:33,588 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-15 19:53:33,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:33,589 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-15 19:53:33,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:33,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:33,590 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:33,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-15 19:53:33,802 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:33,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:33,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 51 times [2020-10-15 19:53:33,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:33,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083557614] [2020-10-15 19:53:33,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:33,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:33,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083557614] [2020-10-15 19:53:33,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672998553] [2020-10-15 19:53:33,898 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:33,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:33,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:33,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:33,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:34,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:34,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:34,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076082737] [2020-10-15 19:53:34,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:34,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:34,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:34,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:34,060 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-15 19:53:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:34,203 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-15 19:53:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:34,204 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:34,206 INFO L225 Difference]: With dead ends: 172 [2020-10-15 19:53:34,206 INFO L226 Difference]: Without dead ends: 170 [2020-10-15 19:53:34,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2020-10-15 19:53:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-15 19:53:34,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-15 19:53:34,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-15 19:53:34,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-15 19:53:34,212 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-15 19:53:34,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:34,212 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-15 19:53:34,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:34,212 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-15 19:53:34,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:34,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:34,213 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:34,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:34,423 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:34,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:34,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 52 times [2020-10-15 19:53:34,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:34,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61675096] [2020-10-15 19:53:34,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:34,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61675096] [2020-10-15 19:53:34,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581925511] [2020-10-15 19:53:34,504 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:34,556 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:34,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:34,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:34,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:35,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:35,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:35,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:35,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745224691] [2020-10-15 19:53:35,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:35,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:35,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:35,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:35,220 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-15 19:53:35,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:35,423 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-15 19:53:35,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:35,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:35,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:35,426 INFO L225 Difference]: With dead ends: 179 [2020-10-15 19:53:35,426 INFO L226 Difference]: Without dead ends: 177 [2020-10-15 19:53:35,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:53:35,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-15 19:53:35,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-15 19:53:35,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-15 19:53:35,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-15 19:53:35,431 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-15 19:53:35,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:35,431 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-15 19:53:35,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:35,432 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-15 19:53:35,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:35,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:35,432 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:35,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-15 19:53:35,644 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:35,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:35,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 53 times [2020-10-15 19:53:35,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:35,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47017424] [2020-10-15 19:53:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:35,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47017424] [2020-10-15 19:53:35,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414900958] [2020-10-15 19:53:35,736 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:35,775 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:35,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:35,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:35,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:35,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:35,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:35,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478743706] [2020-10-15 19:53:35,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:35,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:35,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:35,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:35,902 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-15 19:53:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:36,096 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-15 19:53:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:53:36,097 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:36,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:36,098 INFO L225 Difference]: With dead ends: 179 [2020-10-15 19:53:36,098 INFO L226 Difference]: Without dead ends: 177 [2020-10-15 19:53:36,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:36,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-15 19:53:36,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-15 19:53:36,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-15 19:53:36,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-15 19:53:36,102 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-15 19:53:36,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:36,103 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-15 19:53:36,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-15 19:53:36,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:36,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:36,104 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:36,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-15 19:53:36,314 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:36,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:36,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 54 times [2020-10-15 19:53:36,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:36,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497301299] [2020-10-15 19:53:36,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:36,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:36,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497301299] [2020-10-15 19:53:36,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276965196] [2020-10-15 19:53:36,398 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:36,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:36,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:36,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:36,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:36,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:36,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:36,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149886535] [2020-10-15 19:53:36,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:36,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:36,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:36,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:36,542 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-15 19:53:36,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:36,748 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-15 19:53:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:36,748 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:36,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:36,750 INFO L225 Difference]: With dead ends: 184 [2020-10-15 19:53:36,750 INFO L226 Difference]: Without dead ends: 182 [2020-10-15 19:53:36,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:36,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-15 19:53:36,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-15 19:53:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-15 19:53:36,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-15 19:53:36,754 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-15 19:53:36,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:36,754 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-15 19:53:36,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-15 19:53:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:36,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:36,754 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:36,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-15 19:53:36,963 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:36,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:36,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 55 times [2020-10-15 19:53:36,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:36,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255973518] [2020-10-15 19:53:36,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:37,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255973518] [2020-10-15 19:53:37,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65690847] [2020-10-15 19:53:37,044 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:37,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:37,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:37,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:37,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:37,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:37,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767788766] [2020-10-15 19:53:37,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:37,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:37,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:37,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:37,216 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-15 19:53:37,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:37,455 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-15 19:53:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:37,455 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:37,457 INFO L225 Difference]: With dead ends: 179 [2020-10-15 19:53:37,457 INFO L226 Difference]: Without dead ends: 177 [2020-10-15 19:53:37,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:37,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-15 19:53:37,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-15 19:53:37,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-15 19:53:37,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-15 19:53:37,461 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-15 19:53:37,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:37,462 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-15 19:53:37,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-15 19:53:37,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:37,462 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:37,462 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:37,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:37,674 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:37,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 56 times [2020-10-15 19:53:37,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:37,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072726144] [2020-10-15 19:53:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:37,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072726144] [2020-10-15 19:53:37,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245629653] [2020-10-15 19:53:37,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:37,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:37,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:37,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:37,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:37,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:37,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:37,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:37,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897512653] [2020-10-15 19:53:37,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:37,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:37,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:37,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:37,953 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-15 19:53:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:38,108 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-15 19:53:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:38,109 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:38,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:38,111 INFO L225 Difference]: With dead ends: 176 [2020-10-15 19:53:38,111 INFO L226 Difference]: Without dead ends: 174 [2020-10-15 19:53:38,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:53:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-15 19:53:38,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-15 19:53:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-15 19:53:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-15 19:53:38,114 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-15 19:53:38,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:38,114 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-15 19:53:38,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:38,114 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-15 19:53:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:38,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:38,115 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:38,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:38,315 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:38,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:38,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 57 times [2020-10-15 19:53:38,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:38,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047836130] [2020-10-15 19:53:38,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:38,407 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:38,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047836130] [2020-10-15 19:53:38,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48951745] [2020-10-15 19:53:38,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:38,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:53:38,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:38,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:38,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:38,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:38,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:38,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613568980] [2020-10-15 19:53:38,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:38,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:38,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:38,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:38,590 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-15 19:53:38,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:38,808 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-15 19:53:38,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:38,809 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:38,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:38,810 INFO L225 Difference]: With dead ends: 185 [2020-10-15 19:53:38,810 INFO L226 Difference]: Without dead ends: 183 [2020-10-15 19:53:38,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=277, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:38,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-15 19:53:38,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-15 19:53:38,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 19:53:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-15 19:53:38,815 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-15 19:53:38,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:38,815 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-15 19:53:38,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:38,816 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-15 19:53:38,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:38,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:38,817 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:39,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:39,028 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:39,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 58 times [2020-10-15 19:53:39,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:39,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671640410] [2020-10-15 19:53:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:39,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:39,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671640410] [2020-10-15 19:53:39,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204542062] [2020-10-15 19:53:39,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:39,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:39,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:39,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:39,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:39,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:39,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:39,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:39,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183783100] [2020-10-15 19:53:39,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:39,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:39,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:39,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:39,303 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-15 19:53:39,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:39,508 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-15 19:53:39,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:39,508 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:39,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:39,510 INFO L225 Difference]: With dead ends: 185 [2020-10-15 19:53:39,510 INFO L226 Difference]: Without dead ends: 183 [2020-10-15 19:53:39,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-15 19:53:39,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-15 19:53:39,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-15 19:53:39,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-15 19:53:39,514 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-15 19:53:39,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:39,515 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-15 19:53:39,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:39,515 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-15 19:53:39,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:39,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:39,515 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:39,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:39,727 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:39,727 INFO L82 PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 59 times [2020-10-15 19:53:39,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:39,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875416987] [2020-10-15 19:53:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:39,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875416987] [2020-10-15 19:53:39,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46007629] [2020-10-15 19:53:39,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:39,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:53:39,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:39,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:39,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:40,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:40,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:40,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085803393] [2020-10-15 19:53:40,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:40,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:40,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:40,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:40,059 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-15 19:53:40,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:40,121 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-15 19:53:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:53:40,122 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:40,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:40,123 INFO L225 Difference]: With dead ends: 182 [2020-10-15 19:53:40,123 INFO L226 Difference]: Without dead ends: 180 [2020-10-15 19:53:40,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:53:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-15 19:53:40,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-15 19:53:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-15 19:53:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-15 19:53:40,129 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-15 19:53:40,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:40,129 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-15 19:53:40,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:40,130 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-15 19:53:40,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:40,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:40,130 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:40,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-15 19:53:40,338 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:40,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:40,339 INFO L82 PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 60 times [2020-10-15 19:53:40,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:40,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117678941] [2020-10-15 19:53:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:40,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117678941] [2020-10-15 19:53:40,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605648552] [2020-10-15 19:53:40,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:40,487 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:40,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:40,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:40,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:40,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:40,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:40,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:40,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308935032] [2020-10-15 19:53:40,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:40,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:40,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:40,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:40,613 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-15 19:53:40,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:40,797 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-15 19:53:40,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 19:53:40,798 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:40,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:40,800 INFO L225 Difference]: With dead ends: 185 [2020-10-15 19:53:40,800 INFO L226 Difference]: Without dead ends: 183 [2020-10-15 19:53:40,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:53:40,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-15 19:53:40,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-15 19:53:40,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:53:40,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-15 19:53:40,804 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-15 19:53:40,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:40,804 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-15 19:53:40,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:40,804 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-15 19:53:40,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:40,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:40,805 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:41,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:41,006 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:41,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:41,006 INFO L82 PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 61 times [2020-10-15 19:53:41,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:41,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981331352] [2020-10-15 19:53:41,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:41,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:41,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981331352] [2020-10-15 19:53:41,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182043381] [2020-10-15 19:53:41,095 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:41,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:41,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:41,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:41,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:41,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:41,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293553015] [2020-10-15 19:53:41,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:41,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:41,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:41,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:41,291 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-15 19:53:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:41,518 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-15 19:53:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 19:53:41,519 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:41,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:41,520 INFO L225 Difference]: With dead ends: 191 [2020-10-15 19:53:41,520 INFO L226 Difference]: Without dead ends: 189 [2020-10-15 19:53:41,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-15 19:53:41,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-15 19:53:41,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 19:53:41,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-15 19:53:41,523 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-15 19:53:41,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:41,523 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-15 19:53:41,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:41,523 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-15 19:53:41,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:41,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:41,523 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:41,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:41,725 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:41,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:41,725 INFO L82 PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 62 times [2020-10-15 19:53:41,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:41,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999387617] [2020-10-15 19:53:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:41,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:41,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999387617] [2020-10-15 19:53:41,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987111305] [2020-10-15 19:53:41,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:41,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:41,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:41,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:41,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:42,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:42,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:42,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413597698] [2020-10-15 19:53:42,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:42,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:42,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:42,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:42,018 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-15 19:53:42,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:42,253 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-15 19:53:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:42,253 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:42,255 INFO L225 Difference]: With dead ends: 187 [2020-10-15 19:53:42,255 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 19:53:42,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:53:42,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 19:53:42,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-15 19:53:42,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:53:42,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-15 19:53:42,260 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-15 19:53:42,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:42,260 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-15 19:53:42,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:42,260 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-15 19:53:42,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:42,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:42,260 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:42,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-15 19:53:42,461 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:42,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:42,462 INFO L82 PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 63 times [2020-10-15 19:53:42,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:42,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080860242] [2020-10-15 19:53:42,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:42,546 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:42,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080860242] [2020-10-15 19:53:42,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363448566] [2020-10-15 19:53:42,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:42,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:42,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:42,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:42,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:42,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:42,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:42,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443039441] [2020-10-15 19:53:42,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:42,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:42,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:42,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:42,691 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-15 19:53:42,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:42,939 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-15 19:53:42,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:53:42,940 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:42,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:42,942 INFO L225 Difference]: With dead ends: 198 [2020-10-15 19:53:42,942 INFO L226 Difference]: Without dead ends: 196 [2020-10-15 19:53:42,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:53:42,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-15 19:53:42,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-15 19:53:42,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:53:42,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-15 19:53:42,946 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-15 19:53:42,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:42,946 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-15 19:53:42,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-15 19:53:42,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:42,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:42,947 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:43,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:43,149 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:43,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:43,149 INFO L82 PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 64 times [2020-10-15 19:53:43,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:43,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068901695] [2020-10-15 19:53:43,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:43,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:43,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068901695] [2020-10-15 19:53:43,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353890722] [2020-10-15 19:53:43,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:43,270 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:43,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:43,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:43,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:43,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:43,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:43,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016890771] [2020-10-15 19:53:43,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:43,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:43,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:43,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:43,387 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-15 19:53:43,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:43,645 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-15 19:53:43,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:53:43,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:43,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:43,647 INFO L225 Difference]: With dead ends: 189 [2020-10-15 19:53:43,647 INFO L226 Difference]: Without dead ends: 187 [2020-10-15 19:53:43,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:53:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-15 19:53:43,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-15 19:53:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-15 19:53:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-15 19:53:43,650 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-15 19:53:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:43,651 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-15 19:53:43,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-15 19:53:43,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:43,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:43,652 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:43,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-15 19:53:43,853 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:43,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:43,854 INFO L82 PathProgramCache]: Analyzing trace with hash 646625441, now seen corresponding path program 65 times [2020-10-15 19:53:43,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:43,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840476571] [2020-10-15 19:53:43,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:43,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:43,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:43,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840476571] [2020-10-15 19:53:43,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239849866] [2020-10-15 19:53:43,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:44,001 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:53:44,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:44,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:44,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:44,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:44,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:44,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:44,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596622640] [2020-10-15 19:53:44,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:44,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:44,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:44,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:44,119 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-15 19:53:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:44,207 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-15 19:53:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:53:44,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:44,209 INFO L225 Difference]: With dead ends: 178 [2020-10-15 19:53:44,209 INFO L226 Difference]: Without dead ends: 176 [2020-10-15 19:53:44,209 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:53:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-15 19:53:44,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-15 19:53:44,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-15 19:53:44,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-15 19:53:44,211 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-15 19:53:44,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:44,211 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-15 19:53:44,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:44,212 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-15 19:53:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:44,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:44,212 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:44,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:44,413 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:44,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:44,413 INFO L82 PathProgramCache]: Analyzing trace with hash 646626402, now seen corresponding path program 66 times [2020-10-15 19:53:44,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:44,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194722447] [2020-10-15 19:53:44,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:44,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194722447] [2020-10-15 19:53:44,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710275048] [2020-10-15 19:53:44,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:44,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:44,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:44,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:44,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:44,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:44,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:44,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047604704] [2020-10-15 19:53:44,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:44,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:44,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:44,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:44,707 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-15 19:53:44,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:44,914 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-15 19:53:44,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:44,915 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:44,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:44,916 INFO L225 Difference]: With dead ends: 193 [2020-10-15 19:53:44,916 INFO L226 Difference]: Without dead ends: 191 [2020-10-15 19:53:44,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:53:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-15 19:53:44,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-15 19:53:44,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-15 19:53:44,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-15 19:53:44,920 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-15 19:53:44,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:44,920 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-15 19:53:44,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-15 19:53:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:44,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:44,921 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:45,121 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-15 19:53:45,121 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:45,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:45,122 INFO L82 PathProgramCache]: Analyzing trace with hash 646655232, now seen corresponding path program 67 times [2020-10-15 19:53:45,122 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:45,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790045335] [2020-10-15 19:53:45,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:45,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790045335] [2020-10-15 19:53:45,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143737703] [2020-10-15 19:53:45,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:45,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:45,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:45,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:45,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:45,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026933151] [2020-10-15 19:53:45,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:45,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:45,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:45,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:45,384 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-15 19:53:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:45,642 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-15 19:53:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:45,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:45,645 INFO L225 Difference]: With dead ends: 195 [2020-10-15 19:53:45,645 INFO L226 Difference]: Without dead ends: 193 [2020-10-15 19:53:45,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-10-15 19:53:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-15 19:53:45,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-15 19:53:45,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 19:53:45,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-15 19:53:45,649 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-15 19:53:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:45,649 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-15 19:53:45,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:45,650 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-15 19:53:45,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:45,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:45,650 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:45,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:45,862 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:45,862 INFO L82 PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 68 times [2020-10-15 19:53:45,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:45,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600828885] [2020-10-15 19:53:45,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:45,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:45,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600828885] [2020-10-15 19:53:45,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320238594] [2020-10-15 19:53:45,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:46,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:46,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:46,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:46,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:46,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:46,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:46,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593614952] [2020-10-15 19:53:46,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:46,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:46,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:46,133 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-15 19:53:46,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:46,239 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-15 19:53:46,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:53:46,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:46,241 INFO L225 Difference]: With dead ends: 174 [2020-10-15 19:53:46,241 INFO L226 Difference]: Without dead ends: 172 [2020-10-15 19:53:46,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2020-10-15 19:53:46,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-15 19:53:46,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-15 19:53:46,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:53:46,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-15 19:53:46,245 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-15 19:53:46,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:46,245 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-15 19:53:46,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:46,245 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-15 19:53:46,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:46,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:46,245 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:46,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-15 19:53:46,446 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:46,447 INFO L82 PathProgramCache]: Analyzing trace with hash 667182192, now seen corresponding path program 69 times [2020-10-15 19:53:46,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:46,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946211140] [2020-10-15 19:53:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:46,526 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:46,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946211140] [2020-10-15 19:53:46,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932410910] [2020-10-15 19:53:46,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:46,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:46,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:46,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:46,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:46,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:46,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:46,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808474449] [2020-10-15 19:53:46,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:46,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:46,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:46,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:46,688 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-15 19:53:46,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:46,926 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-15 19:53:46,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:53:46,927 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:46,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:46,928 INFO L225 Difference]: With dead ends: 189 [2020-10-15 19:53:46,928 INFO L226 Difference]: Without dead ends: 187 [2020-10-15 19:53:46,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-15 19:53:46,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-15 19:53:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-15 19:53:46,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-15 19:53:46,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-15 19:53:46,932 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-15 19:53:46,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:46,932 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-15 19:53:46,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-15 19:53:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:46,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:46,932 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:47,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:47,135 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:47,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:47,135 INFO L82 PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 70 times [2020-10-15 19:53:47,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:47,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241228859] [2020-10-15 19:53:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:47,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241228859] [2020-10-15 19:53:47,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635859331] [2020-10-15 19:53:47,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:47,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:47,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:47,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:47,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:47,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:47,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:47,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395780187] [2020-10-15 19:53:47,380 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:47,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:47,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:47,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:47,381 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-15 19:53:47,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:47,521 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-15 19:53:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:53:47,521 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:47,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:47,523 INFO L225 Difference]: With dead ends: 175 [2020-10-15 19:53:47,523 INFO L226 Difference]: Without dead ends: 173 [2020-10-15 19:53:47,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-10-15 19:53:47,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-15 19:53:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-15 19:53:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-15 19:53:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-15 19:53:47,526 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-15 19:53:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:47,527 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-15 19:53:47,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-15 19:53:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:47,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:47,527 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:47,731 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:47,732 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:47,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:47,732 INFO L82 PathProgramCache]: Analyzing trace with hash 667866641, now seen corresponding path program 71 times [2020-10-15 19:53:47,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:47,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100792331] [2020-10-15 19:53:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:47,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:47,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100792331] [2020-10-15 19:53:47,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076660407] [2020-10-15 19:53:47,801 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:47,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:53:47,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:47,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:47,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:47,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:47,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:47,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:47,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628464250] [2020-10-15 19:53:47,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:47,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:47,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:47,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:47,988 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-15 19:53:48,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:48,320 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-15 19:53:48,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:48,321 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:48,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:48,322 INFO L225 Difference]: With dead ends: 195 [2020-10-15 19:53:48,322 INFO L226 Difference]: Without dead ends: 190 [2020-10-15 19:53:48,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:53:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-15 19:53:48,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-15 19:53:48,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-15 19:53:48,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-15 19:53:48,326 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-15 19:53:48,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:48,326 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-15 19:53:48,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:48,326 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-15 19:53:48,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:48,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:48,327 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:48,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:48,528 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:48,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:48,529 INFO L82 PathProgramCache]: Analyzing trace with hash 667874112, now seen corresponding path program 72 times [2020-10-15 19:53:48,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:48,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429150525] [2020-10-15 19:53:48,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:48,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:48,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429150525] [2020-10-15 19:53:48,603 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213738788] [2020-10-15 19:53:48,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:48,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:48,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:48,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:48,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:48,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:48,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:48,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:48,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560742028] [2020-10-15 19:53:48,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:48,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:48,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:48,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:48,777 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-15 19:53:49,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:49,034 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-15 19:53:49,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 19:53:49,035 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:49,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:49,036 INFO L225 Difference]: With dead ends: 187 [2020-10-15 19:53:49,036 INFO L226 Difference]: Without dead ends: 185 [2020-10-15 19:53:49,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:53:49,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-15 19:53:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-15 19:53:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-15 19:53:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-15 19:53:49,039 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-15 19:53:49,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:49,040 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-15 19:53:49,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:49,040 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-15 19:53:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:49,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:49,040 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:49,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:49,241 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:49,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:49,241 INFO L82 PathProgramCache]: Analyzing trace with hash 667895471, now seen corresponding path program 73 times [2020-10-15 19:53:49,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:49,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192911794] [2020-10-15 19:53:49,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:49,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192911794] [2020-10-15 19:53:49,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130763791] [2020-10-15 19:53:49,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:49,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:49,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:49,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:49,465 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:49,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:49,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:49,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:49,495 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88103171] [2020-10-15 19:53:49,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:49,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:49,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:49,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:49,496 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-15 19:53:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:49,936 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-15 19:53:49,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:53:49,937 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:49,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:49,938 INFO L225 Difference]: With dead ends: 212 [2020-10-15 19:53:49,938 INFO L226 Difference]: Without dead ends: 207 [2020-10-15 19:53:49,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:53:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-15 19:53:49,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-15 19:53:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-15 19:53:49,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-15 19:53:49,941 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-15 19:53:49,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:49,942 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-15 19:53:49,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:49,942 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-15 19:53:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:49,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:49,942 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:50,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-15 19:53:50,143 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:50,144 INFO L82 PathProgramCache]: Analyzing trace with hash 667896432, now seen corresponding path program 74 times [2020-10-15 19:53:50,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:50,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208490901] [2020-10-15 19:53:50,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:50,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:50,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:50,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208490901] [2020-10-15 19:53:50,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916028616] [2020-10-15 19:53:50,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:50,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:53:50,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:50,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:50,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:50,365 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:53:50,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:50,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:50,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:50,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229246993] [2020-10-15 19:53:50,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:50,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:50,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:50,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:50,386 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-15 19:53:50,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:50,701 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-15 19:53:50,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:50,701 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:50,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:50,703 INFO L225 Difference]: With dead ends: 202 [2020-10-15 19:53:50,703 INFO L226 Difference]: Without dead ends: 197 [2020-10-15 19:53:50,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=401, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:53:50,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-15 19:53:50,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-15 19:53:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-15 19:53:50,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-15 19:53:50,707 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-15 19:53:50,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:50,708 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-15 19:53:50,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-15 19:53:50,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:50,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:50,708 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:50,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:50,909 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:50,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:50,909 INFO L82 PathProgramCache]: Analyzing trace with hash 668104752, now seen corresponding path program 75 times [2020-10-15 19:53:50,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:50,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904203865] [2020-10-15 19:53:50,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:50,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:50,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904203865] [2020-10-15 19:53:50,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44303026] [2020-10-15 19:53:50,981 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:51,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:53:51,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:51,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:51,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:51,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:51,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:51,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:51,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469267946] [2020-10-15 19:53:51,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:51,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:51,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:51,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:51,189 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-15 19:53:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:51,487 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-15 19:53:51,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:53:51,487 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:51,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:51,489 INFO L225 Difference]: With dead ends: 198 [2020-10-15 19:53:51,490 INFO L226 Difference]: Without dead ends: 196 [2020-10-15 19:53:51,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:53:51,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-15 19:53:51,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-15 19:53:51,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-15 19:53:51,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-15 19:53:51,495 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-15 19:53:51,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:51,495 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-15 19:53:51,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:51,495 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-15 19:53:51,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:51,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:51,496 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:51,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-15 19:53:51,698 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:51,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:51,698 INFO L82 PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 76 times [2020-10-15 19:53:51,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:51,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45798493] [2020-10-15 19:53:51,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:51,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:51,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45798493] [2020-10-15 19:53:51,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561202457] [2020-10-15 19:53:51,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:51,802 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:53:51,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:51,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:51,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:51,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:51,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:51,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:51,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411214167] [2020-10-15 19:53:51,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:51,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:51,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:51,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:51,963 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-15 19:53:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:52,370 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-15 19:53:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:53:52,371 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:52,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:52,373 INFO L225 Difference]: With dead ends: 209 [2020-10-15 19:53:52,373 INFO L226 Difference]: Without dead ends: 207 [2020-10-15 19:53:52,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=444, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:53:52,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-15 19:53:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-15 19:53:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-15 19:53:52,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-15 19:53:52,376 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-15 19:53:52,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:52,376 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-15 19:53:52,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-15 19:53:52,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:52,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:52,377 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:52,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-15 19:53:52,578 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:52,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:52,578 INFO L82 PathProgramCache]: Analyzing trace with hash 668789201, now seen corresponding path program 77 times [2020-10-15 19:53:52,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:52,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177428653] [2020-10-15 19:53:52,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:52,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177428653] [2020-10-15 19:53:52,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058910479] [2020-10-15 19:53:52,649 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:52,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:53:52,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:52,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:52,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:52,804 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:52,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:52,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:52,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552455041] [2020-10-15 19:53:52,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:52,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:52,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:52,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:53:52,842 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-15 19:53:53,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:53:53,385 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-15 19:53:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 19:53:53,386 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:53:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:53:53,387 INFO L225 Difference]: With dead ends: 217 [2020-10-15 19:53:53,387 INFO L226 Difference]: Without dead ends: 212 [2020-10-15 19:53:53,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-15 19:53:53,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-15 19:53:53,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-15 19:53:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-15 19:53:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-15 19:53:53,392 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-15 19:53:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:53:53,392 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-15 19:53:53,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:53:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-15 19:53:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:53:53,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:53:53,393 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:53:53,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-15 19:53:53,604 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:53:53,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:53:53,604 INFO L82 PathProgramCache]: Analyzing trace with hash 668790162, now seen corresponding path program 78 times [2020-10-15 19:53:53,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:53:53,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506806770] [2020-10-15 19:53:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:53:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:53:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:53,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506806770] [2020-10-15 19:53:53,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659712059] [2020-10-15 19:53:53,677 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:53:53,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:53:53,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:53:53,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:53:53,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:53:55,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:53:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:53:55,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:53:55,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:53:55,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878512251] [2020-10-15 19:53:55,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:53:55,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:53:55,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:53:55,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-15 19:53:55,936 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-15 19:54:00,282 WARN L193 SmtUtils]: Spent 4.14 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-15 19:54:04,510 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-15 19:54:05,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:05,553 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-15 19:54:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 19:54:05,554 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:05,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:05,555 INFO L225 Difference]: With dead ends: 236 [2020-10-15 19:54:05,555 INFO L226 Difference]: Without dead ends: 228 [2020-10-15 19:54:05,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=293, Invalid=636, Unknown=1, NotChecked=0, Total=930 [2020-10-15 19:54:05,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-15 19:54:05,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-15 19:54:05,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-15 19:54:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-15 19:54:05,559 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-15 19:54:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:05,560 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-15 19:54:05,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:05,560 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-15 19:54:05,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:05,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:05,560 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:05,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-15 19:54:05,770 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:05,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:05,770 INFO L82 PathProgramCache]: Analyzing trace with hash 668818992, now seen corresponding path program 79 times [2020-10-15 19:54:05,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:05,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57547658] [2020-10-15 19:54:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:05,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:05,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57547658] [2020-10-15 19:54:05,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361785600] [2020-10-15 19:54:05,845 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:05,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:05,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:06,009 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:54:06,011 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:54:06,043 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:06,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:06,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:06,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347510786] [2020-10-15 19:54:06,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:06,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:06,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:06,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:06,045 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 15 states. [2020-10-15 19:54:06,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:06,602 INFO L93 Difference]: Finished difference Result 219 states and 522 transitions. [2020-10-15 19:54:06,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 19:54:06,603 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:06,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:06,604 INFO L225 Difference]: With dead ends: 219 [2020-10-15 19:54:06,604 INFO L226 Difference]: Without dead ends: 214 [2020-10-15 19:54:06,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=262, Invalid=550, Unknown=0, NotChecked=0, Total=812 [2020-10-15 19:54:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-15 19:54:06,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 140. [2020-10-15 19:54:06,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 19:54:06,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-15 19:54:06,607 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-15 19:54:06,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:06,607 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-15 19:54:06,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:06,607 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-15 19:54:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:06,607 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:06,607 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:06,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:06,808 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:06,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:06,808 INFO L82 PathProgramCache]: Analyzing trace with hash 675254592, now seen corresponding path program 80 times [2020-10-15 19:54:06,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:06,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342603757] [2020-10-15 19:54:06,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:06,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342603757] [2020-10-15 19:54:06,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482155554] [2020-10-15 19:54:06,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:06,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:54:06,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:06,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:06,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:07,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:07,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:07,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501688122] [2020-10-15 19:54:07,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:07,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:07,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:07,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:07,075 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-15 19:54:07,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:07,343 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-15 19:54:07,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:54:07,343 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:07,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:07,344 INFO L225 Difference]: With dead ends: 197 [2020-10-15 19:54:07,344 INFO L226 Difference]: Without dead ends: 195 [2020-10-15 19:54:07,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:54:07,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-15 19:54:07,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-15 19:54:07,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-15 19:54:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-15 19:54:07,348 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-15 19:54:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:07,348 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-15 19:54:07,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-15 19:54:07,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:07,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:07,349 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:07,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:07,552 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:07,552 INFO L82 PathProgramCache]: Analyzing trace with hash 675255553, now seen corresponding path program 81 times [2020-10-15 19:54:07,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:07,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180695716] [2020-10-15 19:54:07,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:07,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:07,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180695716] [2020-10-15 19:54:07,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217292297] [2020-10-15 19:54:07,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:07,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:54:07,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:07,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:07,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:07,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:07,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:07,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985610891] [2020-10-15 19:54:07,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:07,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:07,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:07,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:07,789 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-15 19:54:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:08,058 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-15 19:54:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:54:08,059 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:08,059 INFO L225 Difference]: With dead ends: 202 [2020-10-15 19:54:08,059 INFO L226 Difference]: Without dead ends: 200 [2020-10-15 19:54:08,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:54:08,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-15 19:54:08,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-15 19:54:08,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-15 19:54:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-15 19:54:08,062 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-15 19:54:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:08,062 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-15 19:54:08,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:08,062 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-15 19:54:08,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:08,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:08,063 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:08,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-15 19:54:08,263 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash 675284383, now seen corresponding path program 82 times [2020-10-15 19:54:08,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:08,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88466774] [2020-10-15 19:54:08,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:08,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:08,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88466774] [2020-10-15 19:54:08,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90236448] [2020-10-15 19:54:08,336 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:08,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:54:08,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:08,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:08,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:08,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:08,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:08,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:08,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845981258] [2020-10-15 19:54:08,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:08,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:08,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:08,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:08,564 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-15 19:54:08,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:08,909 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-15 19:54:08,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:54:08,909 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:08,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:08,910 INFO L225 Difference]: With dead ends: 197 [2020-10-15 19:54:08,910 INFO L226 Difference]: Without dead ends: 195 [2020-10-15 19:54:08,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:54:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-15 19:54:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-15 19:54:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:54:08,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-15 19:54:08,914 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-15 19:54:08,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:08,914 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-15 19:54:08,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:08,914 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-15 19:54:08,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:08,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:08,915 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:09,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-15 19:54:09,122 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:09,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:09,123 INFO L82 PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 83 times [2020-10-15 19:54:09,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:09,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140615726] [2020-10-15 19:54:09,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:09,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:09,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140615726] [2020-10-15 19:54:09,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409608961] [2020-10-15 19:54:09,194 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:09,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:54:09,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:09,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:09,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:09,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:09,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:09,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690635010] [2020-10-15 19:54:09,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:09,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:09,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:09,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:09,358 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-15 19:54:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:09,766 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-15 19:54:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 19:54:09,767 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:09,767 INFO L225 Difference]: With dead ends: 214 [2020-10-15 19:54:09,768 INFO L226 Difference]: Without dead ends: 212 [2020-10-15 19:54:09,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:54:09,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-15 19:54:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-15 19:54:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-15 19:54:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-15 19:54:09,771 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-15 19:54:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:09,771 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-15 19:54:09,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:09,771 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-15 19:54:09,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:09,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:09,772 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:09,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-15 19:54:09,972 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:09,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:09,973 INFO L82 PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 84 times [2020-10-15 19:54:09,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:09,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762762162] [2020-10-15 19:54:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:10,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762762162] [2020-10-15 19:54:10,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750873734] [2020-10-15 19:54:10,058 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:10,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:54:10,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:10,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:10,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:10,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:10,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:10,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826751998] [2020-10-15 19:54:10,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:10,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:10,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:10,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:10,227 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-15 19:54:10,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:10,629 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-15 19:54:10,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 19:54:10,630 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:10,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:10,631 INFO L225 Difference]: With dead ends: 217 [2020-10-15 19:54:10,631 INFO L226 Difference]: Without dead ends: 215 [2020-10-15 19:54:10,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:54:10,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-15 19:54:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-15 19:54:10,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-15 19:54:10,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-15 19:54:10,634 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-15 19:54:10,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:10,635 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-15 19:54:10,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-15 19:54:10,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:10,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:10,635 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:10,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:10,836 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:10,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:10,836 INFO L82 PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 85 times [2020-10-15 19:54:10,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:10,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301740911] [2020-10-15 19:54:10,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:10,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:10,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301740911] [2020-10-15 19:54:10,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730008826] [2020-10-15 19:54:10,906 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:10,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:10,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:11,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:11,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:11,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406520169] [2020-10-15 19:54:11,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:11,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:11,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:11,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:11,072 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-15 19:54:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:11,486 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-15 19:54:11,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:54:11,487 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:11,488 INFO L225 Difference]: With dead ends: 211 [2020-10-15 19:54:11,488 INFO L226 Difference]: Without dead ends: 209 [2020-10-15 19:54:11,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:54:11,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-15 19:54:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-15 19:54:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-15 19:54:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-15 19:54:11,492 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-15 19:54:11,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:11,492 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-15 19:54:11,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-15 19:54:11,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:11,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:11,493 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:11,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:11,694 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:11,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:11,694 INFO L82 PathProgramCache]: Analyzing trace with hash 696494831, now seen corresponding path program 86 times [2020-10-15 19:54:11,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:11,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671055083] [2020-10-15 19:54:11,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:11,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:11,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671055083] [2020-10-15 19:54:11,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315073299] [2020-10-15 19:54:11,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:11,808 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:54:11,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:11,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:11,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:11,914 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:54:11,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:11,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:11,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:11,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211989760] [2020-10-15 19:54:11,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:11,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:11,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:11,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:11,925 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-15 19:54:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:12,424 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-15 19:54:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 19:54:12,425 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:12,426 INFO L225 Difference]: With dead ends: 211 [2020-10-15 19:54:12,426 INFO L226 Difference]: Without dead ends: 206 [2020-10-15 19:54:12,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:54:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-15 19:54:12,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-15 19:54:12,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-15 19:54:12,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-15 19:54:12,430 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-15 19:54:12,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:12,430 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-15 19:54:12,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:12,430 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-15 19:54:12,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:12,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:12,430 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:12,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-15 19:54:12,631 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:12,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:12,632 INFO L82 PathProgramCache]: Analyzing trace with hash 696495792, now seen corresponding path program 87 times [2020-10-15 19:54:12,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:12,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808389852] [2020-10-15 19:54:12,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:12,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:12,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:12,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808389852] [2020-10-15 19:54:12,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992127847] [2020-10-15 19:54:12,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:12,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:54:12,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:12,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:12,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:12,860 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:54:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:12,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:12,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:12,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187097466] [2020-10-15 19:54:12,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:12,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:12,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:12,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:12,895 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-15 19:54:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:13,506 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-15 19:54:13,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 19:54:13,507 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:13,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:13,508 INFO L225 Difference]: With dead ends: 227 [2020-10-15 19:54:13,508 INFO L226 Difference]: Without dead ends: 222 [2020-10-15 19:54:13,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 19:54:13,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-15 19:54:13,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-15 19:54:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-15 19:54:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-15 19:54:13,513 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-15 19:54:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:13,513 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-15 19:54:13,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:13,513 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-15 19:54:13,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:13,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:13,513 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:13,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-15 19:54:13,717 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:13,717 INFO L82 PathProgramCache]: Analyzing trace with hash 696503263, now seen corresponding path program 88 times [2020-10-15 19:54:13,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:13,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652337231] [2020-10-15 19:54:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:13,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652337231] [2020-10-15 19:54:13,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150424280] [2020-10-15 19:54:13,791 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:13,830 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:54:13,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:13,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:13,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:13,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:13,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:13,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993761288] [2020-10-15 19:54:13,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:13,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:13,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:13,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:13,964 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-15 19:54:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:14,449 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-15 19:54:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 19:54:14,449 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:14,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:14,450 INFO L225 Difference]: With dead ends: 221 [2020-10-15 19:54:14,450 INFO L226 Difference]: Without dead ends: 219 [2020-10-15 19:54:14,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2020-10-15 19:54:14,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-15 19:54:14,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-15 19:54:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-15 19:54:14,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-15 19:54:14,454 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-15 19:54:14,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:14,454 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-15 19:54:14,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:14,454 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-15 19:54:14,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:14,455 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:14,455 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:14,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:14,655 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:14,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:14,658 INFO L82 PathProgramCache]: Analyzing trace with hash 696524622, now seen corresponding path program 89 times [2020-10-15 19:54:14,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:14,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650587686] [2020-10-15 19:54:14,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:14,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:14,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650587686] [2020-10-15 19:54:14,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440091423] [2020-10-15 19:54:14,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:14,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:54:14,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:14,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:14,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:14,882 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:54:14,892 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:14,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:14,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:14,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024858304] [2020-10-15 19:54:14,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:14,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:14,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:14,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:14,894 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-15 19:54:15,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:15,505 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-15 19:54:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:54:15,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:15,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:15,506 INFO L225 Difference]: With dead ends: 240 [2020-10-15 19:54:15,506 INFO L226 Difference]: Without dead ends: 232 [2020-10-15 19:54:15,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:54:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-15 19:54:15,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-15 19:54:15,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-15 19:54:15,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-15 19:54:15,509 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-15 19:54:15,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:15,510 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-15 19:54:15,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-15 19:54:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:15,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:15,510 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:15,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-15 19:54:15,711 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:15,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:15,712 INFO L82 PathProgramCache]: Analyzing trace with hash 696525583, now seen corresponding path program 90 times [2020-10-15 19:54:15,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:15,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260867236] [2020-10-15 19:54:15,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:15,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:15,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260867236] [2020-10-15 19:54:15,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67015033] [2020-10-15 19:54:15,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:15,833 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:54:15,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:15,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:15,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:16,001 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:54:16,019 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:16,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:16,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:16,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057726128] [2020-10-15 19:54:16,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:16,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:16,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:16,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:16,022 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-15 19:54:16,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:16,819 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-15 19:54:16,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:54:16,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:16,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:16,821 INFO L225 Difference]: With dead ends: 238 [2020-10-15 19:54:16,822 INFO L226 Difference]: Without dead ends: 230 [2020-10-15 19:54:16,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:54:16,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-15 19:54:16,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-15 19:54:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:54:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-15 19:54:16,828 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-15 19:54:16,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:16,828 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-15 19:54:16,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-15 19:54:16,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:16,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:16,829 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:17,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:17,030 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:17,031 INFO L82 PathProgramCache]: Analyzing trace with hash 696733903, now seen corresponding path program 91 times [2020-10-15 19:54:17,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:17,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336848383] [2020-10-15 19:54:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:17,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:17,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336848383] [2020-10-15 19:54:17,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161465777] [2020-10-15 19:54:17,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:17,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:17,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:17,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:17,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:17,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:17,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584299513] [2020-10-15 19:54:17,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:17,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:17,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:17,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:17,397 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-15 19:54:17,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:17,770 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-15 19:54:17,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:54:17,772 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:17,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:17,773 INFO L225 Difference]: With dead ends: 195 [2020-10-15 19:54:17,773 INFO L226 Difference]: Without dead ends: 193 [2020-10-15 19:54:17,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:54:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-15 19:54:17,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-15 19:54:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:54:17,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-15 19:54:17,778 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-15 19:54:17,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:17,779 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-15 19:54:17,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:17,779 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-15 19:54:17,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:17,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:17,780 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:17,991 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-15 19:54:17,991 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:17,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:17,992 INFO L82 PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 92 times [2020-10-15 19:54:17,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:17,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274021128] [2020-10-15 19:54:17,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:18,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274021128] [2020-10-15 19:54:18,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124804847] [2020-10-15 19:54:18,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:18,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:54:18,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:18,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:18,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:18,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:18,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:54:18,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142009058] [2020-10-15 19:54:18,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:54:18,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:18,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:54:18,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:54:18,393 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-15 19:54:19,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:54:19,060 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-15 19:54:19,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 19:54:19,061 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:54:19,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:54:19,062 INFO L225 Difference]: With dead ends: 206 [2020-10-15 19:54:19,062 INFO L226 Difference]: Without dead ends: 204 [2020-10-15 19:54:19,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:54:19,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-15 19:54:19,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-15 19:54:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-15 19:54:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-15 19:54:19,066 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-15 19:54:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:54:19,066 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-15 19:54:19,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:54:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-15 19:54:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:54:19,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:54:19,067 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:54:19,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:19,276 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:54:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:54:19,277 INFO L82 PathProgramCache]: Analyzing trace with hash 697419313, now seen corresponding path program 93 times [2020-10-15 19:54:19,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:54:19,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89365291] [2020-10-15 19:54:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:54:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:54:19,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:19,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89365291] [2020-10-15 19:54:19,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205949260] [2020-10-15 19:54:19,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:54:19,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:54:19,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:54:19,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:54:19,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:54:19,510 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:54:23,626 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-15 19:54:23,627 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:54:23,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:54:23,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-15 19:54:23,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137772086] [2020-10-15 19:54:23,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:54:23,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:54:23,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:54:23,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-15 19:54:23,629 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-15 19:54:26,068 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-15 19:54:48,320 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-15 19:55:16,951 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-15 19:55:37,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:37,914 INFO L93 Difference]: Finished difference Result 252 states and 593 transitions. [2020-10-15 19:55:37,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 19:55:37,915 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-15 19:55:37,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:37,916 INFO L225 Difference]: With dead ends: 252 [2020-10-15 19:55:37,916 INFO L226 Difference]: Without dead ends: 247 [2020-10-15 19:55:37,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 33.0s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332 [2020-10-15 19:55:37,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-15 19:55:37,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 139. [2020-10-15 19:55:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-15 19:55:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-15 19:55:37,920 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-15 19:55:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:37,921 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-15 19:55:37,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:55:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-15 19:55:37,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:37,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:37,921 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:38,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-15 19:55:38,131 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:38,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:38,131 INFO L82 PathProgramCache]: Analyzing trace with hash 896899632, now seen corresponding path program 94 times [2020-10-15 19:55:38,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:38,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922331129] [2020-10-15 19:55:38,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:38,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:38,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922331129] [2020-10-15 19:55:38,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148980328] [2020-10-15 19:55:38,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:38,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:55:38,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:38,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:38,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:38,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:38,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:38,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143138747] [2020-10-15 19:55:38,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:38,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:38,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:38,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:38,386 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-15 19:55:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:38,606 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-15 19:55:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:55:38,606 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:38,607 INFO L225 Difference]: With dead ends: 194 [2020-10-15 19:55:38,607 INFO L226 Difference]: Without dead ends: 192 [2020-10-15 19:55:38,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:55:38,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-15 19:55:38,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-15 19:55:38,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-15 19:55:38,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-15 19:55:38,610 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-15 19:55:38,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:38,611 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-15 19:55:38,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:38,611 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-15 19:55:38,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:38,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:38,611 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:38,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:38,812 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:38,813 INFO L82 PathProgramCache]: Analyzing trace with hash 896900593, now seen corresponding path program 95 times [2020-10-15 19:55:38,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:38,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372289297] [2020-10-15 19:55:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:38,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:38,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372289297] [2020-10-15 19:55:38,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160482842] [2020-10-15 19:55:38,905 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:38,942 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:55:38,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:38,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:38,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:39,094 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:39,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:39,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:39,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534149656] [2020-10-15 19:55:39,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:39,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:39,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:39,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:39,096 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-15 19:55:39,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:39,416 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-15 19:55:39,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:55:39,416 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:39,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:39,417 INFO L225 Difference]: With dead ends: 205 [2020-10-15 19:55:39,417 INFO L226 Difference]: Without dead ends: 203 [2020-10-15 19:55:39,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:55:39,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-15 19:55:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-15 19:55:39,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:55:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-15 19:55:39,421 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-15 19:55:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:39,421 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-15 19:55:39,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:39,421 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-15 19:55:39,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:39,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:39,422 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:39,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:39,631 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:39,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:39,631 INFO L82 PathProgramCache]: Analyzing trace with hash 896929423, now seen corresponding path program 96 times [2020-10-15 19:55:39,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:39,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634655557] [2020-10-15 19:55:39,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:39,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:39,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634655557] [2020-10-15 19:55:39,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654824783] [2020-10-15 19:55:39,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:39,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:55:39,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:39,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:39,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:39,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:39,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:39,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:39,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108959424] [2020-10-15 19:55:39,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:39,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:39,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:39,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:39,892 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-15 19:55:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:40,167 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-15 19:55:40,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:55:40,168 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:40,169 INFO L225 Difference]: With dead ends: 201 [2020-10-15 19:55:40,169 INFO L226 Difference]: Without dead ends: 199 [2020-10-15 19:55:40,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:55:40,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-15 19:55:40,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-15 19:55:40,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-15 19:55:40,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-15 19:55:40,172 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-15 19:55:40,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:40,172 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-15 19:55:40,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:40,172 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-15 19:55:40,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:40,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:40,173 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:40,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:40,373 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:40,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:40,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 97 times [2020-10-15 19:55:40,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:40,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139795803] [2020-10-15 19:55:40,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:40,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:40,448 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:40,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139795803] [2020-10-15 19:55:40,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488218869] [2020-10-15 19:55:40,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:40,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:40,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:40,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:40,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:40,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:40,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208550363] [2020-10-15 19:55:40,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:40,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:40,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:40,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:40,689 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-15 19:55:41,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:41,009 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-15 19:55:41,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:55:41,010 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:41,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:41,011 INFO L225 Difference]: With dead ends: 194 [2020-10-15 19:55:41,012 INFO L226 Difference]: Without dead ends: 192 [2020-10-15 19:55:41,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-15 19:55:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-15 19:55:41,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-15 19:55:41,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 19:55:41,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-15 19:55:41,016 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-15 19:55:41,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:41,017 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-15 19:55:41,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:41,017 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-15 19:55:41,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:41,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:41,018 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:41,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-15 19:55:41,229 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:41,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:41,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 98 times [2020-10-15 19:55:41,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:41,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652681467] [2020-10-15 19:55:41,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:41,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652681467] [2020-10-15 19:55:41,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836642557] [2020-10-15 19:55:41,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:41,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:55:41,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:41,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:41,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:41,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:41,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:41,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224230509] [2020-10-15 19:55:41,534 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:41,534 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:41,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:41,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:41,534 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-15 19:55:41,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:41,904 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-15 19:55:41,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:55:41,904 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:41,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:41,905 INFO L225 Difference]: With dead ends: 209 [2020-10-15 19:55:41,905 INFO L226 Difference]: Without dead ends: 207 [2020-10-15 19:55:41,905 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=156, Invalid=396, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:55:41,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-15 19:55:41,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-15 19:55:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 19:55:41,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-15 19:55:41,909 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-15 19:55:41,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:41,909 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-15 19:55:41,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:41,910 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-15 19:55:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:41,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:41,910 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:42,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:42,119 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:42,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:42,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 99 times [2020-10-15 19:55:42,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:42,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549413559] [2020-10-15 19:55:42,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:42,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549413559] [2020-10-15 19:55:42,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771510105] [2020-10-15 19:55:42,196 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:42,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:55:42,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:42,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:42,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:42,389 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:42,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:42,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:42,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479008944] [2020-10-15 19:55:42,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:42,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:42,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:42,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:42,390 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-15 19:55:42,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:42,731 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-15 19:55:42,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:55:42,732 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:42,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:42,733 INFO L225 Difference]: With dead ends: 202 [2020-10-15 19:55:42,733 INFO L226 Difference]: Without dead ends: 200 [2020-10-15 19:55:42,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:55:42,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-15 19:55:42,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-15 19:55:42,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-15 19:55:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-15 19:55:42,737 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-15 19:55:42,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:42,737 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-15 19:55:42,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:42,737 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-15 19:55:42,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:42,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:42,738 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:42,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-15 19:55:42,938 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 100 times [2020-10-15 19:55:42,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:42,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961806679] [2020-10-15 19:55:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:42,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:43,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961806679] [2020-10-15 19:55:43,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656734352] [2020-10-15 19:55:43,017 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:43,057 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:55:43,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:43,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:43,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:43,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:43,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:43,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459020400] [2020-10-15 19:55:43,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:43,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:43,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:43,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:43,198 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-15 19:55:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:43,512 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-15 19:55:43,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:55:43,513 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:43,514 INFO L225 Difference]: With dead ends: 201 [2020-10-15 19:55:43,514 INFO L226 Difference]: Without dead ends: 199 [2020-10-15 19:55:43,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:55:43,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-15 19:55:43,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-15 19:55:43,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-15 19:55:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-15 19:55:43,517 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-15 19:55:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:43,517 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-15 19:55:43,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-15 19:55:43,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:43,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:43,518 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:43,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-15 19:55:43,723 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:43,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:43,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 101 times [2020-10-15 19:55:43,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:43,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729682198] [2020-10-15 19:55:43,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:43,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729682198] [2020-10-15 19:55:43,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046205952] [2020-10-15 19:55:43,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:43,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:55:43,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:43,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:43,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:43,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:43,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:43,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:43,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590525094] [2020-10-15 19:55:43,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:43,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:43,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:43,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:43,985 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-15 19:55:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:44,450 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-15 19:55:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 19:55:44,451 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:44,451 INFO L225 Difference]: With dead ends: 215 [2020-10-15 19:55:44,451 INFO L226 Difference]: Without dead ends: 213 [2020-10-15 19:55:44,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:55:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-15 19:55:44,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-15 19:55:44,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:55:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-15 19:55:44,456 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-15 19:55:44,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:44,456 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-15 19:55:44,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:44,457 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-15 19:55:44,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:44,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:44,457 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:44,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:44,668 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:44,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:44,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 102 times [2020-10-15 19:55:44,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:44,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595224102] [2020-10-15 19:55:44,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:44,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:44,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595224102] [2020-10-15 19:55:44,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685649705] [2020-10-15 19:55:44,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:44,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:55:44,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:44,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:44,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:44,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:44,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:44,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817764040] [2020-10-15 19:55:44,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:44,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:44,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:44,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:44,936 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-15 19:55:45,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:45,323 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-15 19:55:45,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:55:45,324 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:45,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:45,325 INFO L225 Difference]: With dead ends: 196 [2020-10-15 19:55:45,325 INFO L226 Difference]: Without dead ends: 194 [2020-10-15 19:55:45,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:55:45,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-15 19:55:45,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-15 19:55:45,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-15 19:55:45,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-15 19:55:45,330 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-15 19:55:45,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:45,330 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-15 19:55:45,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-15 19:55:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:45,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:45,331 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:45,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:45,533 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:45,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1555369361, now seen corresponding path program 103 times [2020-10-15 19:55:45,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:45,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808725802] [2020-10-15 19:55:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:45,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808725802] [2020-10-15 19:55:45,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291897460] [2020-10-15 19:55:45,611 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:45,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:45,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:45,752 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:55:45,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:45,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:45,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:45,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737383122] [2020-10-15 19:55:45,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:45,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:45,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:45,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:45,765 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-15 19:55:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:46,078 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-15 19:55:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:55:46,079 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:46,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:46,080 INFO L225 Difference]: With dead ends: 191 [2020-10-15 19:55:46,080 INFO L226 Difference]: Without dead ends: 186 [2020-10-15 19:55:46,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:55:46,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-15 19:55:46,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-15 19:55:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-15 19:55:46,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-15 19:55:46,084 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-15 19:55:46,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:46,084 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-15 19:55:46,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:46,085 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-15 19:55:46,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:46,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:46,085 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:46,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-15 19:55:46,294 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:46,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1555370322, now seen corresponding path program 104 times [2020-10-15 19:55:46,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:46,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307317467] [2020-10-15 19:55:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:46,378 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:46,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307317467] [2020-10-15 19:55:46,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51346047] [2020-10-15 19:55:46,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:46,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:55:46,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:46,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:46,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:46,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:55:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:46,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:46,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:46,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791795515] [2020-10-15 19:55:46,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:46,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:46,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:46,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:46,569 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-15 19:55:47,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:47,139 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-15 19:55:47,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 19:55:47,140 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:47,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:47,141 INFO L225 Difference]: With dead ends: 232 [2020-10-15 19:55:47,141 INFO L226 Difference]: Without dead ends: 227 [2020-10-15 19:55:47,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-15 19:55:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-15 19:55:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-15 19:55:47,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-15 19:55:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-15 19:55:47,145 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-15 19:55:47,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:47,145 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-15 19:55:47,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:47,145 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-15 19:55:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:47,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:47,146 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:47,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:47,347 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:47,347 INFO L82 PathProgramCache]: Analyzing trace with hash 1555377793, now seen corresponding path program 105 times [2020-10-15 19:55:47,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:47,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802719926] [2020-10-15 19:55:47,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:47,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:47,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802719926] [2020-10-15 19:55:47,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530817987] [2020-10-15 19:55:47,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:47,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:55:47,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:47,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:47,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:47,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:47,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:47,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:47,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949323718] [2020-10-15 19:55:47,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:47,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:47,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:47,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:47,613 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-15 19:55:48,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:48,188 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-15 19:55:48,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 19:55:48,189 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:48,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:48,189 INFO L225 Difference]: With dead ends: 222 [2020-10-15 19:55:48,190 INFO L226 Difference]: Without dead ends: 220 [2020-10-15 19:55:48,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2020-10-15 19:55:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-15 19:55:48,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-15 19:55:48,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-15 19:55:48,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-15 19:55:48,193 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-15 19:55:48,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:48,193 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-15 19:55:48,193 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:48,193 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-15 19:55:48,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:48,194 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:48,194 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:48,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:48,395 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:48,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:48,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1555399152, now seen corresponding path program 106 times [2020-10-15 19:55:48,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:48,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743450857] [2020-10-15 19:55:48,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:48,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:48,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743450857] [2020-10-15 19:55:48,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754017707] [2020-10-15 19:55:48,479 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:48,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:55:48,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:48,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:48,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:48,648 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:55:48,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:48,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:48,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:48,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430898339] [2020-10-15 19:55:48,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:48,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:48,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:48,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:48,683 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-15 19:55:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:49,483 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-15 19:55:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:55:49,484 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:49,485 INFO L225 Difference]: With dead ends: 254 [2020-10-15 19:55:49,486 INFO L226 Difference]: Without dead ends: 246 [2020-10-15 19:55:49,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=345, Invalid=777, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:55:49,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-15 19:55:49,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-15 19:55:49,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-15 19:55:49,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-15 19:55:49,492 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-15 19:55:49,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:49,492 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-15 19:55:49,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:49,493 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-15 19:55:49,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:49,493 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:49,493 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:49,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:49,695 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:49,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1555400113, now seen corresponding path program 107 times [2020-10-15 19:55:49,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:49,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703961338] [2020-10-15 19:55:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:49,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703961338] [2020-10-15 19:55:49,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567811598] [2020-10-15 19:55:49,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:49,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:55:49,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:49,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:49,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:49,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:55:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:49,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:49,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:49,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118941490] [2020-10-15 19:55:49,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:49,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:49,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:49,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:49,956 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-15 19:55:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:50,767 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-15 19:55:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:55:50,767 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:50,768 INFO L225 Difference]: With dead ends: 246 [2020-10-15 19:55:50,768 INFO L226 Difference]: Without dead ends: 238 [2020-10-15 19:55:50,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 19:55:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-15 19:55:50,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-15 19:55:50,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-15 19:55:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-15 19:55:50,773 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-15 19:55:50,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:50,773 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-15 19:55:50,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:50,773 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-15 19:55:50,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:50,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:50,774 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:50,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-15 19:55:50,983 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:50,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:50,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1555608433, now seen corresponding path program 108 times [2020-10-15 19:55:50,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:50,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776699381] [2020-10-15 19:55:50,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:51,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776699381] [2020-10-15 19:55:51,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374959446] [2020-10-15 19:55:51,063 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:51,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:55:51,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:51,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:51,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:51,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:51,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:51,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736716933] [2020-10-15 19:55:51,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:51,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:51,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:51,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:51,260 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-15 19:55:51,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:51,668 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-15 19:55:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 19:55:51,669 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:51,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:51,669 INFO L225 Difference]: With dead ends: 208 [2020-10-15 19:55:51,669 INFO L226 Difference]: Without dead ends: 206 [2020-10-15 19:55:51,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:55:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-15 19:55:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-15 19:55:51,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-15 19:55:51,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-15 19:55:51,673 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-15 19:55:51,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:51,673 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-15 19:55:51,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:51,673 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-15 19:55:51,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:51,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:51,674 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:51,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-15 19:55:51,882 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:51,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:51,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 109 times [2020-10-15 19:55:51,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:51,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875161332] [2020-10-15 19:55:51,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:51,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:51,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875161332] [2020-10-15 19:55:51,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128298063] [2020-10-15 19:55:51,964 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:52,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:52,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:52,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:52,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:52,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:52,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462653970] [2020-10-15 19:55:52,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:52,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:52,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:52,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:52,134 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-15 19:55:52,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:52,667 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-15 19:55:52,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 19:55:52,668 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:52,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:52,669 INFO L225 Difference]: With dead ends: 215 [2020-10-15 19:55:52,669 INFO L226 Difference]: Without dead ends: 213 [2020-10-15 19:55:52,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-15 19:55:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-15 19:55:52,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-15 19:55:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-15 19:55:52,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-15 19:55:52,673 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-15 19:55:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:52,673 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-15 19:55:52,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:52,674 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-15 19:55:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:52,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:52,674 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:52,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-15 19:55:52,875 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:52,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:52,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1556292882, now seen corresponding path program 110 times [2020-10-15 19:55:52,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:52,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912100430] [2020-10-15 19:55:52,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:52,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912100430] [2020-10-15 19:55:52,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049196119] [2020-10-15 19:55:52,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:53,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:55:53,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:53,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:53,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:53,102 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:55:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:53,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:53,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:53,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368228928] [2020-10-15 19:55:53,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:53,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:53,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:53,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:53,115 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-15 19:55:53,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:53,718 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-15 19:55:53,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:55:53,718 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:53,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:53,719 INFO L225 Difference]: With dead ends: 236 [2020-10-15 19:55:53,719 INFO L226 Difference]: Without dead ends: 228 [2020-10-15 19:55:53,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:55:53,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-15 19:55:53,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-15 19:55:53,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-15 19:55:53,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-15 19:55:53,722 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-15 19:55:53,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:53,722 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-15 19:55:53,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:53,722 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-15 19:55:53,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:53,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:53,723 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:53,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-15 19:55:53,924 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:53,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:53,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1556293843, now seen corresponding path program 111 times [2020-10-15 19:55:53,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:53,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991115220] [2020-10-15 19:55:53,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:54,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991115220] [2020-10-15 19:55:54,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115377900] [2020-10-15 19:55:54,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:54,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:55:54,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:54,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:54,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:54,150 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:55:54,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:54,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:54,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:54,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839532547] [2020-10-15 19:55:54,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:54,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:54,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:54,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:54,161 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-15 19:55:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:54,822 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-15 19:55:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:55:54,822 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:54,823 INFO L225 Difference]: With dead ends: 241 [2020-10-15 19:55:54,823 INFO L226 Difference]: Without dead ends: 233 [2020-10-15 19:55:54,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:55:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-15 19:55:54,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-15 19:55:54,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-15 19:55:54,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-15 19:55:54,826 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-15 19:55:54,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:54,826 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-15 19:55:54,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:54,827 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-15 19:55:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:54,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:54,827 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:55,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-15 19:55:55,028 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:55,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:55,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1556322673, now seen corresponding path program 112 times [2020-10-15 19:55:55,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:55,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503145168] [2020-10-15 19:55:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:55,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503145168] [2020-10-15 19:55:55,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240848689] [2020-10-15 19:55:55,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:55,152 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:55:55,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:55,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-15 19:55:55,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:55,269 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:55:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:55,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:55,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-15 19:55:55,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003859752] [2020-10-15 19:55:55,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 19:55:55,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:55,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 19:55:55,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-15 19:55:55,284 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-15 19:55:55,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:55,902 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-15 19:55:55,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 19:55:55,902 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-15 19:55:55,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:55,903 INFO L225 Difference]: With dead ends: 232 [2020-10-15 19:55:55,903 INFO L226 Difference]: Without dead ends: 224 [2020-10-15 19:55:55,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 19:55:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-15 19:55:55,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-15 19:55:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-15 19:55:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-15 19:55:55,907 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-15 19:55:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:55,907 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-15 19:55:55,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 19:55:55,907 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-15 19:55:55,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:55,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:55,908 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:56,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:56,108 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:56,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times [2020-10-15 19:55:56,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:56,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885506779] [2020-10-15 19:55:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:56,213 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:56,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885506779] [2020-10-15 19:55:56,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726441910] [2020-10-15 19:55:56,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:56,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-15 19:55:56,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:56,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:55:56,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:56,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 19:55:56,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-15 19:55:56,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697539030] [2020-10-15 19:55:56,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 19:55:56,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:56,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 19:55:56,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:55:56,358 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 8 states. [2020-10-15 19:55:56,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:56,387 INFO L93 Difference]: Finished difference Result 195 states and 513 transitions. [2020-10-15 19:55:56,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 19:55:56,387 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-15 19:55:56,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:56,389 INFO L225 Difference]: With dead ends: 195 [2020-10-15 19:55:56,389 INFO L226 Difference]: Without dead ends: 188 [2020-10-15 19:55:56,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:55:56,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-15 19:55:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-15 19:55:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-15 19:55:56,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 500 transitions. [2020-10-15 19:55:56,393 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 500 transitions. Word has length 13 [2020-10-15 19:55:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:56,393 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 500 transitions. [2020-10-15 19:55:56,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 19:55:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 500 transitions. [2020-10-15 19:55:56,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:56,394 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:56,394 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:56,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-15 19:55:56,604 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 21 times [2020-10-15 19:55:56,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:56,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33561569] [2020-10-15 19:55:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:56,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33561569] [2020-10-15 19:55:56,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988995525] [2020-10-15 19:55:56,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:56,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 19:55:56,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:56,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:55:56,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:57,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:57,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:55:57,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320220375] [2020-10-15 19:55:57,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:55:57,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:57,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:55:57,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:55:57,163 INFO L87 Difference]: Start difference. First operand 188 states and 500 transitions. Second operand 17 states. [2020-10-15 19:55:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:57,251 INFO L93 Difference]: Finished difference Result 249 states and 638 transitions. [2020-10-15 19:55:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:55:57,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-15 19:55:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:57,253 INFO L225 Difference]: With dead ends: 249 [2020-10-15 19:55:57,253 INFO L226 Difference]: Without dead ends: 241 [2020-10-15 19:55:57,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:55:57,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-15 19:55:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 197. [2020-10-15 19:55:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-15 19:55:57,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 521 transitions. [2020-10-15 19:55:57,258 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 521 transitions. Word has length 13 [2020-10-15 19:55:57,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:57,258 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 521 transitions. [2020-10-15 19:55:57,258 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:55:57,258 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 521 transitions. [2020-10-15 19:55:57,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 19:55:57,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:57,259 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:57,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-15 19:55:57,469 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:57,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:57,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1413108102, now seen corresponding path program 22 times [2020-10-15 19:55:57,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:57,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593104206] [2020-10-15 19:55:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:57,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593104206] [2020-10-15 19:55:57,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953101836] [2020-10-15 19:55:57,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:57,663 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:55:57,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:57,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-15 19:55:57,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:57,742 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:57,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-15 19:55:57,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2020-10-15 19:55:57,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381407552] [2020-10-15 19:55:57,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 19:55:57,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:57,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 19:55:57,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:55:57,744 INFO L87 Difference]: Start difference. First operand 197 states and 521 transitions. Second operand 8 states. [2020-10-15 19:55:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:57,774 INFO L93 Difference]: Finished difference Result 278 states and 705 transitions. [2020-10-15 19:55:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 19:55:57,775 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-10-15 19:55:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:57,776 INFO L225 Difference]: With dead ends: 278 [2020-10-15 19:55:57,776 INFO L226 Difference]: Without dead ends: 248 [2020-10-15 19:55:57,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:55:57,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-15 19:55:57,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 240. [2020-10-15 19:55:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-15 19:55:57,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 626 transitions. [2020-10-15 19:55:57,779 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 626 transitions. Word has length 13 [2020-10-15 19:55:57,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:57,779 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 626 transitions. [2020-10-15 19:55:57,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 19:55:57,779 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 626 transitions. [2020-10-15 19:55:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:55:57,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:57,780 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:57,980 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:57,981 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:57,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:57,981 INFO L82 PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 113 times [2020-10-15 19:55:57,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:57,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826647294] [2020-10-15 19:55:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:57,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:58,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826647294] [2020-10-15 19:55:58,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179036443] [2020-10-15 19:55:58,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:58,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:55:58,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:58,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:55:58,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:58,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:58,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:55:58,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758615623] [2020-10-15 19:55:58,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:55:58,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:58,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:55:58,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:55:58,323 INFO L87 Difference]: Start difference. First operand 240 states and 626 transitions. Second operand 17 states. [2020-10-15 19:55:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:58,389 INFO L93 Difference]: Finished difference Result 275 states and 692 transitions. [2020-10-15 19:55:58,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:55:58,390 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:55:58,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:58,391 INFO L225 Difference]: With dead ends: 275 [2020-10-15 19:55:58,391 INFO L226 Difference]: Without dead ends: 273 [2020-10-15 19:55:58,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:55:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-15 19:55:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 250. [2020-10-15 19:55:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-15 19:55:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 654 transitions. [2020-10-15 19:55:58,396 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 654 transitions. Word has length 14 [2020-10-15 19:55:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:58,396 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 654 transitions. [2020-10-15 19:55:58,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:55:58,396 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 654 transitions. [2020-10-15 19:55:58,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:55:58,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:58,397 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:58,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:58,597 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:58,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:58,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 114 times [2020-10-15 19:55:58,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:58,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390905844] [2020-10-15 19:55:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:58,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390905844] [2020-10-15 19:55:58,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822638352] [2020-10-15 19:55:58,717 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:58,754 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:55:58,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:55:58,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:55:58,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:58,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:58,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:58,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:55:58,942 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780825704] [2020-10-15 19:55:58,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:55:58,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:58,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:55:58,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:55:58,943 INFO L87 Difference]: Start difference. First operand 250 states and 654 transitions. Second operand 17 states. [2020-10-15 19:55:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:55:59,184 INFO L93 Difference]: Finished difference Result 295 states and 735 transitions. [2020-10-15 19:55:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:55:59,184 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:55:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:55:59,185 INFO L225 Difference]: With dead ends: 295 [2020-10-15 19:55:59,186 INFO L226 Difference]: Without dead ends: 292 [2020-10-15 19:55:59,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-15 19:55:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-15 19:55:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 251. [2020-10-15 19:55:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-15 19:55:59,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 657 transitions. [2020-10-15 19:55:59,191 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 657 transitions. Word has length 14 [2020-10-15 19:55:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:55:59,191 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 657 transitions. [2020-10-15 19:55:59,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:55:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 657 transitions. [2020-10-15 19:55:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:55:59,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:55:59,192 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:55:59,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:59,403 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:55:59,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:55:59,404 INFO L82 PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 115 times [2020-10-15 19:55:59,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:55:59,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46391382] [2020-10-15 19:55:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:55:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:59,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46391382] [2020-10-15 19:55:59,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12530070] [2020-10-15 19:55:59,520 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:55:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:55:59,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:55:59,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:55:59,797 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:55:59,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:55:59,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:55:59,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896143011] [2020-10-15 19:55:59,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:55:59,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:55:59,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:55:59,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:55:59,798 INFO L87 Difference]: Start difference. First operand 251 states and 657 transitions. Second operand 17 states. [2020-10-15 19:56:00,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:00,099 INFO L93 Difference]: Finished difference Result 320 states and 793 transitions. [2020-10-15 19:56:00,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:56:00,100 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:00,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:00,101 INFO L225 Difference]: With dead ends: 320 [2020-10-15 19:56:00,101 INFO L226 Difference]: Without dead ends: 316 [2020-10-15 19:56:00,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:56:00,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-15 19:56:00,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 253. [2020-10-15 19:56:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-15 19:56:00,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 663 transitions. [2020-10-15 19:56:00,104 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 663 transitions. Word has length 14 [2020-10-15 19:56:00,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:00,105 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 663 transitions. [2020-10-15 19:56:00,105 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:00,105 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 663 transitions. [2020-10-15 19:56:00,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:00,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:00,105 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:00,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:00,306 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:00,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:00,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 116 times [2020-10-15 19:56:00,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:00,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758813025] [2020-10-15 19:56:00,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:00,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758813025] [2020-10-15 19:56:00,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975441264] [2020-10-15 19:56:00,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:00,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:56:00,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:00,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:00,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:00,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:00,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:00,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622670942] [2020-10-15 19:56:00,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:00,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:00,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:00,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:00,740 INFO L87 Difference]: Start difference. First operand 253 states and 663 transitions. Second operand 17 states. [2020-10-15 19:56:01,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:01,090 INFO L93 Difference]: Finished difference Result 316 states and 781 transitions. [2020-10-15 19:56:01,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:56:01,090 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:01,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:01,091 INFO L225 Difference]: With dead ends: 316 [2020-10-15 19:56:01,091 INFO L226 Difference]: Without dead ends: 313 [2020-10-15 19:56:01,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:56:01,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-15 19:56:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 255. [2020-10-15 19:56:01,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 19:56:01,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 669 transitions. [2020-10-15 19:56:01,096 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 669 transitions. Word has length 14 [2020-10-15 19:56:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:01,096 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 669 transitions. [2020-10-15 19:56:01,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 669 transitions. [2020-10-15 19:56:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:01,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:01,097 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:01,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-15 19:56:01,298 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:01,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:01,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 117 times [2020-10-15 19:56:01,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:01,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324446894] [2020-10-15 19:56:01,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:01,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324446894] [2020-10-15 19:56:01,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858204037] [2020-10-15 19:56:01,412 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:01,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 19:56:01,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:01,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:01,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:05,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:05,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:05,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:05,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783742215] [2020-10-15 19:56:05,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:05,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:05,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:05,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-15 19:56:05,710 INFO L87 Difference]: Start difference. First operand 255 states and 669 transitions. Second operand 17 states. [2020-10-15 19:56:09,926 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-15 19:56:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:11,730 INFO L93 Difference]: Finished difference Result 342 states and 843 transitions. [2020-10-15 19:56:11,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 19:56:11,731 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:11,732 INFO L225 Difference]: With dead ends: 342 [2020-10-15 19:56:11,732 INFO L226 Difference]: Without dead ends: 337 [2020-10-15 19:56:11,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-15 19:56:11,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-15 19:56:11,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 256. [2020-10-15 19:56:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 19:56:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2020-10-15 19:56:11,737 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 14 [2020-10-15 19:56:11,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:11,737 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2020-10-15 19:56:11,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2020-10-15 19:56:11,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:11,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:11,738 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:11,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-15 19:56:11,939 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:11,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:11,939 INFO L82 PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 118 times [2020-10-15 19:56:11,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:11,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809089299] [2020-10-15 19:56:11,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:11,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:12,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:12,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809089299] [2020-10-15 19:56:12,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599145100] [2020-10-15 19:56:12,048 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:12,091 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:56:12,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:12,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:12,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:12,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:12,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:12,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980311781] [2020-10-15 19:56:12,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:12,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:12,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:12,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:12,394 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand 17 states. [2020-10-15 19:56:12,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:12,821 INFO L93 Difference]: Finished difference Result 331 states and 819 transitions. [2020-10-15 19:56:12,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 19:56:12,822 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:12,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:12,823 INFO L225 Difference]: With dead ends: 331 [2020-10-15 19:56:12,823 INFO L226 Difference]: Without dead ends: 327 [2020-10-15 19:56:12,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:56:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-15 19:56:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 256. [2020-10-15 19:56:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 19:56:12,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 672 transitions. [2020-10-15 19:56:12,829 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 672 transitions. Word has length 14 [2020-10-15 19:56:12,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:12,829 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 672 transitions. [2020-10-15 19:56:12,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:12,830 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 672 transitions. [2020-10-15 19:56:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:12,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:12,830 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:13,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-15 19:56:13,031 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:13,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:13,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 119 times [2020-10-15 19:56:13,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:13,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597922261] [2020-10-15 19:56:13,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:13,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597922261] [2020-10-15 19:56:13,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31684984] [2020-10-15 19:56:13,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:13,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:56:13,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:13,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:13,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:13,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:13,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:13,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578385066] [2020-10-15 19:56:13,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:13,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:13,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:13,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:13,355 INFO L87 Difference]: Start difference. First operand 256 states and 672 transitions. Second operand 17 states. [2020-10-15 19:56:13,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:13,679 INFO L93 Difference]: Finished difference Result 321 states and 792 transitions. [2020-10-15 19:56:13,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:56:13,680 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:13,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:13,681 INFO L225 Difference]: With dead ends: 321 [2020-10-15 19:56:13,681 INFO L226 Difference]: Without dead ends: 318 [2020-10-15 19:56:13,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:56:13,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-15 19:56:13,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 259. [2020-10-15 19:56:13,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 19:56:13,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 681 transitions. [2020-10-15 19:56:13,685 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 681 transitions. Word has length 14 [2020-10-15 19:56:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:13,685 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 681 transitions. [2020-10-15 19:56:13,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 681 transitions. [2020-10-15 19:56:13,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:13,686 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:13,686 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:13,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-15 19:56:13,887 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:13,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:13,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 120 times [2020-10-15 19:56:13,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:13,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22076149] [2020-10-15 19:56:13,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:13,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:13,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22076149] [2020-10-15 19:56:13,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60341064] [2020-10-15 19:56:13,993 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:14,030 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:56:14,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:14,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:14,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:14,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:14,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:14,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:14,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088217157] [2020-10-15 19:56:14,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:14,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:14,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:14,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:14,196 INFO L87 Difference]: Start difference. First operand 259 states and 681 transitions. Second operand 17 states. [2020-10-15 19:56:14,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:14,546 INFO L93 Difference]: Finished difference Result 348 states and 857 transitions. [2020-10-15 19:56:14,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:56:14,547 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:14,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:14,547 INFO L225 Difference]: With dead ends: 348 [2020-10-15 19:56:14,547 INFO L226 Difference]: Without dead ends: 343 [2020-10-15 19:56:14,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:56:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-15 19:56:14,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 260. [2020-10-15 19:56:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-15 19:56:14,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 684 transitions. [2020-10-15 19:56:14,552 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 684 transitions. Word has length 14 [2020-10-15 19:56:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:14,553 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 684 transitions. [2020-10-15 19:56:14,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:14,553 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 684 transitions. [2020-10-15 19:56:14,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:14,553 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:14,553 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:14,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-15 19:56:14,754 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:14,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:14,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 121 times [2020-10-15 19:56:14,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:14,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028543329] [2020-10-15 19:56:14,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:14,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028543329] [2020-10-15 19:56:14,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009618975] [2020-10-15 19:56:14,864 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:14,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:14,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:15,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:15,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:15,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:15,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633644287] [2020-10-15 19:56:15,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:15,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:15,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:15,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:15,071 INFO L87 Difference]: Start difference. First operand 260 states and 684 transitions. Second operand 17 states. [2020-10-15 19:56:15,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:15,387 INFO L93 Difference]: Finished difference Result 349 states and 864 transitions. [2020-10-15 19:56:15,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:56:15,388 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:15,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:15,389 INFO L225 Difference]: With dead ends: 349 [2020-10-15 19:56:15,389 INFO L226 Difference]: Without dead ends: 344 [2020-10-15 19:56:15,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:56:15,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-15 19:56:15,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 259. [2020-10-15 19:56:15,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 19:56:15,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 681 transitions. [2020-10-15 19:56:15,394 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 681 transitions. Word has length 14 [2020-10-15 19:56:15,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:15,394 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 681 transitions. [2020-10-15 19:56:15,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 681 transitions. [2020-10-15 19:56:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:15,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:15,395 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:15,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-15 19:56:15,595 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:15,596 INFO L82 PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 122 times [2020-10-15 19:56:15,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:15,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16821323] [2020-10-15 19:56:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:15,707 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:15,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16821323] [2020-10-15 19:56:15,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661944271] [2020-10-15 19:56:15,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:15,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:56:15,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:15,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:15,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:15,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:15,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:15,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148879231] [2020-10-15 19:56:15,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:15,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:15,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:15,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:15,914 INFO L87 Difference]: Start difference. First operand 259 states and 681 transitions. Second operand 17 states. [2020-10-15 19:56:16,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:16,198 INFO L93 Difference]: Finished difference Result 332 states and 822 transitions. [2020-10-15 19:56:16,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:56:16,199 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:16,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:16,199 INFO L225 Difference]: With dead ends: 332 [2020-10-15 19:56:16,200 INFO L226 Difference]: Without dead ends: 314 [2020-10-15 19:56:16,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:56:16,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-15 19:56:16,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 260. [2020-10-15 19:56:16,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-15 19:56:16,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 677 transitions. [2020-10-15 19:56:16,204 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 677 transitions. Word has length 14 [2020-10-15 19:56:16,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:16,204 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 677 transitions. [2020-10-15 19:56:16,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:16,204 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 677 transitions. [2020-10-15 19:56:16,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:16,205 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:16,205 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:16,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:16,406 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:16,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:16,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 123 times [2020-10-15 19:56:16,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:16,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156672876] [2020-10-15 19:56:16,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:16,528 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:16,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156672876] [2020-10-15 19:56:16,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823525438] [2020-10-15 19:56:16,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:16,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 19:56:16,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:16,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:16,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:16,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:16,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:16,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:16,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296655702] [2020-10-15 19:56:16,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:16,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:16,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:16,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:16,729 INFO L87 Difference]: Start difference. First operand 260 states and 677 transitions. Second operand 17 states. [2020-10-15 19:56:17,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:17,003 INFO L93 Difference]: Finished difference Result 315 states and 779 transitions. [2020-10-15 19:56:17,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:56:17,004 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:17,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:17,005 INFO L225 Difference]: With dead ends: 315 [2020-10-15 19:56:17,005 INFO L226 Difference]: Without dead ends: 312 [2020-10-15 19:56:17,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:56:17,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-15 19:56:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 265. [2020-10-15 19:56:17,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-15 19:56:17,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 690 transitions. [2020-10-15 19:56:17,010 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 690 transitions. Word has length 14 [2020-10-15 19:56:17,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:17,011 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 690 transitions. [2020-10-15 19:56:17,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:17,011 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 690 transitions. [2020-10-15 19:56:17,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:17,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:17,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:17,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:17,212 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:17,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 124 times [2020-10-15 19:56:17,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:17,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157701120] [2020-10-15 19:56:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:17,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:17,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157701120] [2020-10-15 19:56:17,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355879700] [2020-10-15 19:56:17,335 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:17,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:56:17,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:17,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:17,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:17,550 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:17,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:17,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:17,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055306499] [2020-10-15 19:56:17,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:17,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:17,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:17,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:17,552 INFO L87 Difference]: Start difference. First operand 265 states and 690 transitions. Second operand 17 states. [2020-10-15 19:56:17,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:17,868 INFO L93 Difference]: Finished difference Result 334 states and 821 transitions. [2020-10-15 19:56:17,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 19:56:17,869 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:17,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:17,870 INFO L225 Difference]: With dead ends: 334 [2020-10-15 19:56:17,870 INFO L226 Difference]: Without dead ends: 330 [2020-10-15 19:56:17,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:56:17,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-15 19:56:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 264. [2020-10-15 19:56:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 19:56:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 687 transitions. [2020-10-15 19:56:17,874 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 687 transitions. Word has length 14 [2020-10-15 19:56:17,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:17,875 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 687 transitions. [2020-10-15 19:56:17,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:17,875 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 687 transitions. [2020-10-15 19:56:17,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:17,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:17,875 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:18,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:18,076 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:18,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:18,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 125 times [2020-10-15 19:56:18,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:18,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990816189] [2020-10-15 19:56:18,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:18,200 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:18,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990816189] [2020-10-15 19:56:18,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079624789] [2020-10-15 19:56:18,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:18,240 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:56:18,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:18,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:18,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:19,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:19,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:19,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685686278] [2020-10-15 19:56:19,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:19,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:19,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:19,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:19,150 INFO L87 Difference]: Start difference. First operand 264 states and 687 transitions. Second operand 17 states. [2020-10-15 19:56:19,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:19,553 INFO L93 Difference]: Finished difference Result 351 states and 859 transitions. [2020-10-15 19:56:19,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:56:19,554 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:19,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:19,555 INFO L225 Difference]: With dead ends: 351 [2020-10-15 19:56:19,555 INFO L226 Difference]: Without dead ends: 346 [2020-10-15 19:56:19,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:56:19,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-15 19:56:19,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2020-10-15 19:56:19,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 19:56:19,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 700 transitions. [2020-10-15 19:56:19,559 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 700 transitions. Word has length 14 [2020-10-15 19:56:19,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:19,559 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 700 transitions. [2020-10-15 19:56:19,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 700 transitions. [2020-10-15 19:56:19,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:19,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:19,561 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:19,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:19,761 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:19,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:19,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 126 times [2020-10-15 19:56:19,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:19,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63576846] [2020-10-15 19:56:19,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:19,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:19,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63576846] [2020-10-15 19:56:19,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893943627] [2020-10-15 19:56:19,896 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:19,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:56:19,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:19,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:19,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:20,129 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:20,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:20,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:20,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839456500] [2020-10-15 19:56:20,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:20,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:20,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:20,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:20,130 INFO L87 Difference]: Start difference. First operand 269 states and 700 transitions. Second operand 17 states. [2020-10-15 19:56:20,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:20,461 INFO L93 Difference]: Finished difference Result 357 states and 870 transitions. [2020-10-15 19:56:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:56:20,462 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:20,463 INFO L225 Difference]: With dead ends: 357 [2020-10-15 19:56:20,463 INFO L226 Difference]: Without dead ends: 339 [2020-10-15 19:56:20,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:56:20,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-15 19:56:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 269. [2020-10-15 19:56:20,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 19:56:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 696 transitions. [2020-10-15 19:56:20,468 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 696 transitions. Word has length 14 [2020-10-15 19:56:20,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:20,468 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 696 transitions. [2020-10-15 19:56:20,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:20,468 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 696 transitions. [2020-10-15 19:56:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:20,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:20,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:20,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:20,670 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:20,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:20,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 127 times [2020-10-15 19:56:20,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:20,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432710155] [2020-10-15 19:56:20,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:20,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:20,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432710155] [2020-10-15 19:56:20,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846523133] [2020-10-15 19:56:20,792 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:20,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:20,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:21,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:21,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:21,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:21,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107969862] [2020-10-15 19:56:21,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:21,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:21,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:21,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:21,047 INFO L87 Difference]: Start difference. First operand 269 states and 696 transitions. Second operand 17 states. [2020-10-15 19:56:21,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:21,358 INFO L93 Difference]: Finished difference Result 332 states and 820 transitions. [2020-10-15 19:56:21,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:56:21,358 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:21,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:21,359 INFO L225 Difference]: With dead ends: 332 [2020-10-15 19:56:21,359 INFO L226 Difference]: Without dead ends: 327 [2020-10-15 19:56:21,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:56:21,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-15 19:56:21,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 266. [2020-10-15 19:56:21,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 19:56:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 689 transitions. [2020-10-15 19:56:21,364 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 689 transitions. Word has length 14 [2020-10-15 19:56:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:21,365 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 689 transitions. [2020-10-15 19:56:21,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 689 transitions. [2020-10-15 19:56:21,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:21,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:21,365 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:21,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-15 19:56:21,568 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:21,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1283823508, now seen corresponding path program 128 times [2020-10-15 19:56:21,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:21,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844254231] [2020-10-15 19:56:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:21,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:21,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:21,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844254231] [2020-10-15 19:56:21,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876481736] [2020-10-15 19:56:21,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:21,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:56:21,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:21,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:21,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:21,961 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:21,962 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:21,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:21,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945474328] [2020-10-15 19:56:21,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:21,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:21,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:21,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:21,963 INFO L87 Difference]: Start difference. First operand 266 states and 689 transitions. Second operand 17 states. [2020-10-15 19:56:22,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:22,150 INFO L93 Difference]: Finished difference Result 322 states and 792 transitions. [2020-10-15 19:56:22,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 19:56:22,152 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:22,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:22,152 INFO L225 Difference]: With dead ends: 322 [2020-10-15 19:56:22,152 INFO L226 Difference]: Without dead ends: 309 [2020-10-15 19:56:22,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:56:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-15 19:56:22,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 268. [2020-10-15 19:56:22,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 19:56:22,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 691 transitions. [2020-10-15 19:56:22,157 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 691 transitions. Word has length 14 [2020-10-15 19:56:22,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:22,157 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 691 transitions. [2020-10-15 19:56:22,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 691 transitions. [2020-10-15 19:56:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:22,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:22,158 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:22,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-15 19:56:22,359 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:22,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:22,359 INFO L82 PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 129 times [2020-10-15 19:56:22,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:22,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409438299] [2020-10-15 19:56:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:22,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409438299] [2020-10-15 19:56:22,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225730573] [2020-10-15 19:56:22,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:22,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:56:22,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:22,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:22,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:22,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:22,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:22,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:22,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819884293] [2020-10-15 19:56:22,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:22,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:22,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:22,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:22,773 INFO L87 Difference]: Start difference. First operand 268 states and 691 transitions. Second operand 17 states. [2020-10-15 19:56:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:22,855 INFO L93 Difference]: Finished difference Result 305 states and 753 transitions. [2020-10-15 19:56:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 19:56:22,856 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:22,856 INFO L225 Difference]: With dead ends: 305 [2020-10-15 19:56:22,856 INFO L226 Difference]: Without dead ends: 303 [2020-10-15 19:56:22,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-15 19:56:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-15 19:56:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 274. [2020-10-15 19:56:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 19:56:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 709 transitions. [2020-10-15 19:56:22,861 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 709 transitions. Word has length 14 [2020-10-15 19:56:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:22,861 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 709 transitions. [2020-10-15 19:56:22,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:22,861 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 709 transitions. [2020-10-15 19:56:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:22,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:22,862 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:23,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-15 19:56:23,071 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:23,072 INFO L82 PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 130 times [2020-10-15 19:56:23,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:23,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963458596] [2020-10-15 19:56:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:23,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963458596] [2020-10-15 19:56:23,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689358771] [2020-10-15 19:56:23,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:23,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:56:23,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:23,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:23,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:23,458 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:23,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:23,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390360804] [2020-10-15 19:56:23,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:23,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:23,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:23,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:23,459 INFO L87 Difference]: Start difference. First operand 274 states and 709 transitions. Second operand 17 states. [2020-10-15 19:56:23,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:23,727 INFO L93 Difference]: Finished difference Result 325 states and 802 transitions. [2020-10-15 19:56:23,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:56:23,728 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:23,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:23,728 INFO L225 Difference]: With dead ends: 325 [2020-10-15 19:56:23,728 INFO L226 Difference]: Without dead ends: 322 [2020-10-15 19:56:23,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-15 19:56:23,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-15 19:56:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 272. [2020-10-15 19:56:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-15 19:56:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-15 19:56:23,733 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-15 19:56:23,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:23,733 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-15 19:56:23,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:23,733 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-15 19:56:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:23,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:23,734 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:23,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-15 19:56:23,935 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:23,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:23,935 INFO L82 PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 131 times [2020-10-15 19:56:23,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:23,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414181666] [2020-10-15 19:56:23,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:24,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414181666] [2020-10-15 19:56:24,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997903696] [2020-10-15 19:56:24,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:24,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:56:24,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:24,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:24,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:25,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:25,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:25,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135407528] [2020-10-15 19:56:25,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:25,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:25,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:25,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:25,125 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-15 19:56:25,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:25,469 INFO L93 Difference]: Finished difference Result 348 states and 857 transitions. [2020-10-15 19:56:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:56:25,469 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:25,470 INFO L225 Difference]: With dead ends: 348 [2020-10-15 19:56:25,470 INFO L226 Difference]: Without dead ends: 344 [2020-10-15 19:56:25,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:56:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-15 19:56:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 270. [2020-10-15 19:56:25,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 19:56:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 697 transitions. [2020-10-15 19:56:25,475 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 697 transitions. Word has length 14 [2020-10-15 19:56:25,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:25,476 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 697 transitions. [2020-10-15 19:56:25,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:25,476 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 697 transitions. [2020-10-15 19:56:25,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:25,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:25,476 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:25,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:25,677 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:25,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:25,678 INFO L82 PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 132 times [2020-10-15 19:56:25,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:25,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425724112] [2020-10-15 19:56:25,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:25,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:25,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425724112] [2020-10-15 19:56:25,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725003103] [2020-10-15 19:56:25,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:25,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:56:25,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:25,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:25,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:27,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:27,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:27,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813438356] [2020-10-15 19:56:27,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:27,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:27,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:27,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:27,482 INFO L87 Difference]: Start difference. First operand 270 states and 697 transitions. Second operand 17 states. [2020-10-15 19:56:27,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:27,924 INFO L93 Difference]: Finished difference Result 338 states and 827 transitions. [2020-10-15 19:56:27,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:56:27,925 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:27,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:27,926 INFO L225 Difference]: With dead ends: 338 [2020-10-15 19:56:27,926 INFO L226 Difference]: Without dead ends: 335 [2020-10-15 19:56:27,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:56:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-15 19:56:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-10-15 19:56:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-15 19:56:27,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-15 19:56:27,931 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-15 19:56:27,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:27,931 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-15 19:56:27,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:27,931 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-15 19:56:27,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:27,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:27,932 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:28,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:28,142 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:28,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:28,142 INFO L82 PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 133 times [2020-10-15 19:56:28,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:28,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887020734] [2020-10-15 19:56:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:28,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887020734] [2020-10-15 19:56:28,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251224507] [2020-10-15 19:56:28,271 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:28,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:28,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:31,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:31,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:31,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355623556] [2020-10-15 19:56:31,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:31,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:31,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:31,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-15 19:56:31,782 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-15 19:56:36,022 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-15 19:56:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:36,353 INFO L93 Difference]: Finished difference Result 369 states and 902 transitions. [2020-10-15 19:56:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:56:36,353 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:36,354 INFO L225 Difference]: With dead ends: 369 [2020-10-15 19:56:36,354 INFO L226 Difference]: Without dead ends: 364 [2020-10-15 19:56:36,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=205, Invalid=444, Unknown=1, NotChecked=0, Total=650 [2020-10-15 19:56:36,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-15 19:56:36,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 272. [2020-10-15 19:56:36,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-15 19:56:36,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-15 19:56:36,360 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-15 19:56:36,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:36,360 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-15 19:56:36,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:36,360 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-15 19:56:36,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:36,361 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:36,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:36,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-15 19:56:36,571 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:36,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:36,572 INFO L82 PathProgramCache]: Analyzing trace with hash 292227518, now seen corresponding path program 134 times [2020-10-15 19:56:36,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:36,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288196478] [2020-10-15 19:56:36,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:36,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:36,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288196478] [2020-10-15 19:56:36,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301145561] [2020-10-15 19:56:36,701 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:36,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:56:36,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:36,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:36,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:37,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:37,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:37,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102887912] [2020-10-15 19:56:37,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:37,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:37,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:37,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:37,012 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-15 19:56:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:37,469 INFO L93 Difference]: Finished difference Result 352 states and 862 transitions. [2020-10-15 19:56:37,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:56:37,469 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:37,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:37,470 INFO L225 Difference]: With dead ends: 352 [2020-10-15 19:56:37,470 INFO L226 Difference]: Without dead ends: 348 [2020-10-15 19:56:37,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:56:37,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2020-10-15 19:56:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 268. [2020-10-15 19:56:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 19:56:37,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 691 transitions. [2020-10-15 19:56:37,475 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 691 transitions. Word has length 14 [2020-10-15 19:56:37,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:37,475 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 691 transitions. [2020-10-15 19:56:37,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:37,475 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 691 transitions. [2020-10-15 19:56:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:37,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:37,476 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:37,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:37,676 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:37,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:37,677 INFO L82 PathProgramCache]: Analyzing trace with hash 319903357, now seen corresponding path program 135 times [2020-10-15 19:56:37,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:37,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343328988] [2020-10-15 19:56:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:37,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343328988] [2020-10-15 19:56:37,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315231672] [2020-10-15 19:56:37,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:37,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:56:37,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:37,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:37,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:38,012 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:38,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:38,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:38,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879232421] [2020-10-15 19:56:38,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:38,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:38,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:38,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:38,013 INFO L87 Difference]: Start difference. First operand 268 states and 691 transitions. Second operand 17 states. [2020-10-15 19:56:38,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:38,467 INFO L93 Difference]: Finished difference Result 330 states and 806 transitions. [2020-10-15 19:56:38,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:56:38,468 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:38,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:38,469 INFO L225 Difference]: With dead ends: 330 [2020-10-15 19:56:38,469 INFO L226 Difference]: Without dead ends: 327 [2020-10-15 19:56:38,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-10-15 19:56:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-10-15 19:56:38,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 271. [2020-10-15 19:56:38,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 19:56:38,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 700 transitions. [2020-10-15 19:56:38,474 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 700 transitions. Word has length 14 [2020-10-15 19:56:38,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:38,474 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 700 transitions. [2020-10-15 19:56:38,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:38,475 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 700 transitions. [2020-10-15 19:56:38,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:38,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:38,475 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:38,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:38,676 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:38,676 INFO L82 PathProgramCache]: Analyzing trace with hash 319904318, now seen corresponding path program 136 times [2020-10-15 19:56:38,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:38,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567291984] [2020-10-15 19:56:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:38,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567291984] [2020-10-15 19:56:38,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404673400] [2020-10-15 19:56:38,794 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:38,833 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:56:38,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:38,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:38,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:39,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:39,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:39,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920010303] [2020-10-15 19:56:39,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:39,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:39,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:39,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:39,023 INFO L87 Difference]: Start difference. First operand 271 states and 700 transitions. Second operand 17 states. [2020-10-15 19:56:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:39,505 INFO L93 Difference]: Finished difference Result 365 states and 887 transitions. [2020-10-15 19:56:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:56:39,506 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:39,507 INFO L225 Difference]: With dead ends: 365 [2020-10-15 19:56:39,507 INFO L226 Difference]: Without dead ends: 360 [2020-10-15 19:56:39,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2020-10-15 19:56:39,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-15 19:56:39,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 272. [2020-10-15 19:56:39,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-15 19:56:39,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 703 transitions. [2020-10-15 19:56:39,511 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 703 transitions. Word has length 14 [2020-10-15 19:56:39,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:39,511 INFO L481 AbstractCegarLoop]: Abstraction has 272 states and 703 transitions. [2020-10-15 19:56:39,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:39,511 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 703 transitions. [2020-10-15 19:56:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:39,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:39,512 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:39,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:39,712 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:39,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:39,713 INFO L82 PathProgramCache]: Analyzing trace with hash 319933148, now seen corresponding path program 137 times [2020-10-15 19:56:39,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:39,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041531398] [2020-10-15 19:56:39,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:39,831 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:39,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041531398] [2020-10-15 19:56:39,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567902152] [2020-10-15 19:56:39,832 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:39,871 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:56:39,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:39,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:39,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:40,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:40,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:40,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:40,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023266856] [2020-10-15 19:56:40,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:40,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:40,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:40,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:40,037 INFO L87 Difference]: Start difference. First operand 272 states and 703 transitions. Second operand 17 states. [2020-10-15 19:56:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:40,451 INFO L93 Difference]: Finished difference Result 363 states and 882 transitions. [2020-10-15 19:56:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:56:40,452 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:40,453 INFO L225 Difference]: With dead ends: 363 [2020-10-15 19:56:40,453 INFO L226 Difference]: Without dead ends: 358 [2020-10-15 19:56:40,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:56:40,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-15 19:56:40,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 271. [2020-10-15 19:56:40,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 19:56:40,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 700 transitions. [2020-10-15 19:56:40,457 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 700 transitions. Word has length 14 [2020-10-15 19:56:40,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:40,458 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 700 transitions. [2020-10-15 19:56:40,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:40,458 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 700 transitions. [2020-10-15 19:56:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:40,458 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:40,458 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:40,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-15 19:56:40,660 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:40,661 INFO L82 PathProgramCache]: Analyzing trace with hash 320857630, now seen corresponding path program 138 times [2020-10-15 19:56:40,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:40,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246713719] [2020-10-15 19:56:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:40,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:40,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246713719] [2020-10-15 19:56:40,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084608939] [2020-10-15 19:56:40,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:40,816 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:56:40,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:40,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:40,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:41,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:41,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:41,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856144885] [2020-10-15 19:56:41,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:41,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:41,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:41,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:41,003 INFO L87 Difference]: Start difference. First operand 271 states and 700 transitions. Second operand 17 states. [2020-10-15 19:56:41,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:41,350 INFO L93 Difference]: Finished difference Result 333 states and 812 transitions. [2020-10-15 19:56:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:56:41,352 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:41,353 INFO L225 Difference]: With dead ends: 333 [2020-10-15 19:56:41,353 INFO L226 Difference]: Without dead ends: 315 [2020-10-15 19:56:41,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:56:41,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-10-15 19:56:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 266. [2020-10-15 19:56:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 19:56:41,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-15 19:56:41,357 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-15 19:56:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:41,357 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-15 19:56:41,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:41,357 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-15 19:56:41,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:41,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:41,358 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:41,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-15 19:56:41,559 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:41,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:41,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1429448084, now seen corresponding path program 139 times [2020-10-15 19:56:41,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:41,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467042105] [2020-10-15 19:56:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:41,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:41,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467042105] [2020-10-15 19:56:41,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652844521] [2020-10-15 19:56:41,735 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:41,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:41,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:41,956 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:41,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:41,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:41,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632043504] [2020-10-15 19:56:41,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:41,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:41,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:41,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:41,958 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-15 19:56:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:42,072 INFO L93 Difference]: Finished difference Result 296 states and 732 transitions. [2020-10-15 19:56:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 19:56:42,073 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:42,074 INFO L225 Difference]: With dead ends: 296 [2020-10-15 19:56:42,074 INFO L226 Difference]: Without dead ends: 294 [2020-10-15 19:56:42,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-15 19:56:42,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-15 19:56:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 270. [2020-10-15 19:56:42,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 19:56:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 695 transitions. [2020-10-15 19:56:42,079 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 695 transitions. Word has length 14 [2020-10-15 19:56:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:42,079 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 695 transitions. [2020-10-15 19:56:42,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:42,079 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 695 transitions. [2020-10-15 19:56:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:42,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:42,080 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:42,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-15 19:56:42,281 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:42,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:42,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1429447123, now seen corresponding path program 140 times [2020-10-15 19:56:42,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:42,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197313237] [2020-10-15 19:56:42,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:42,425 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:42,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197313237] [2020-10-15 19:56:42,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55607448] [2020-10-15 19:56:42,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:42,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:56:42,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:42,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:42,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:42,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:42,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:42,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329192737] [2020-10-15 19:56:42,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:42,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:42,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:42,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:42,644 INFO L87 Difference]: Start difference. First operand 270 states and 695 transitions. Second operand 17 states. [2020-10-15 19:56:42,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:42,929 INFO L93 Difference]: Finished difference Result 328 states and 803 transitions. [2020-10-15 19:56:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:56:42,930 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:42,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:42,931 INFO L225 Difference]: With dead ends: 328 [2020-10-15 19:56:42,931 INFO L226 Difference]: Without dead ends: 325 [2020-10-15 19:56:42,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-15 19:56:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-10-15 19:56:42,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 268. [2020-10-15 19:56:42,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 19:56:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-15 19:56:42,935 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-15 19:56:42,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:42,935 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-15 19:56:42,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-15 19:56:42,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:42,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:42,936 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:43,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-15 19:56:43,137 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1429418293, now seen corresponding path program 141 times [2020-10-15 19:56:43,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:43,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895138229] [2020-10-15 19:56:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:43,269 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:43,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895138229] [2020-10-15 19:56:43,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46018835] [2020-10-15 19:56:43,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:43,311 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:56:43,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:43,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:43,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:43,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:43,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:43,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:43,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235589483] [2020-10-15 19:56:43,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:43,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:43,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:43,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:43,905 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-15 19:56:44,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:44,350 INFO L93 Difference]: Finished difference Result 344 states and 841 transitions. [2020-10-15 19:56:44,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:56:44,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:44,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:44,352 INFO L225 Difference]: With dead ends: 344 [2020-10-15 19:56:44,352 INFO L226 Difference]: Without dead ends: 340 [2020-10-15 19:56:44,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:56:44,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-15 19:56:44,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 266. [2020-10-15 19:56:44,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 19:56:44,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-15 19:56:44,358 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-15 19:56:44,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:44,358 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-15 19:56:44,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:44,358 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-15 19:56:44,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:44,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:44,359 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:44,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-15 19:56:44,570 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:44,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:44,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1428524563, now seen corresponding path program 142 times [2020-10-15 19:56:44,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:44,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461268812] [2020-10-15 19:56:44,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:44,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:44,681 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:44,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461268812] [2020-10-15 19:56:44,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416641062] [2020-10-15 19:56:44,681 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:44,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:56:44,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:44,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:44,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:46,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:46,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:46,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242996732] [2020-10-15 19:56:46,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:46,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:46,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:46,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:46,708 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-15 19:56:47,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:47,175 INFO L93 Difference]: Finished difference Result 331 states and 805 transitions. [2020-10-15 19:56:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:56:47,176 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:47,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:47,177 INFO L225 Difference]: With dead ends: 331 [2020-10-15 19:56:47,177 INFO L226 Difference]: Without dead ends: 328 [2020-10-15 19:56:47,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:56:47,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-15 19:56:47,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 268. [2020-10-15 19:56:47,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 19:56:47,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-15 19:56:47,183 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-15 19:56:47,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:47,183 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-15 19:56:47,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-15 19:56:47,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:47,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:47,184 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:47,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-15 19:56:47,396 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:47,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:47,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1428523602, now seen corresponding path program 143 times [2020-10-15 19:56:47,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:47,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794387739] [2020-10-15 19:56:47,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:47,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794387739] [2020-10-15 19:56:47,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337053971] [2020-10-15 19:56:47,516 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:47,552 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:56:47,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:47,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:47,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:51,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:51,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:51,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393541768] [2020-10-15 19:56:51,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:51,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:51,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:51,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=208, Unknown=1, NotChecked=0, Total=272 [2020-10-15 19:56:51,274 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-15 19:56:55,563 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-15 19:56:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:55,930 INFO L93 Difference]: Finished difference Result 357 states and 866 transitions. [2020-10-15 19:56:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:56:55,931 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:55,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:55,932 INFO L225 Difference]: With dead ends: 357 [2020-10-15 19:56:55,932 INFO L226 Difference]: Without dead ends: 352 [2020-10-15 19:56:55,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=211, Invalid=490, Unknown=1, NotChecked=0, Total=702 [2020-10-15 19:56:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-15 19:56:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 268. [2020-10-15 19:56:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 19:56:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 689 transitions. [2020-10-15 19:56:55,937 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 689 transitions. Word has length 14 [2020-10-15 19:56:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:55,938 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 689 transitions. [2020-10-15 19:56:55,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 689 transitions. [2020-10-15 19:56:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:55,938 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:55,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:56,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:56,139 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:56,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:56,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1428494772, now seen corresponding path program 144 times [2020-10-15 19:56:56,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:56,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103083849] [2020-10-15 19:56:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:56,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:56,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103083849] [2020-10-15 19:56:56,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988514640] [2020-10-15 19:56:56,256 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:56,296 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:56:56,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:56,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:56,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:56,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:56,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:56,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:56,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696034561] [2020-10-15 19:56:56,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:56,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:56,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:56,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:56,546 INFO L87 Difference]: Start difference. First operand 268 states and 689 transitions. Second operand 17 states. [2020-10-15 19:56:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:57,040 INFO L93 Difference]: Finished difference Result 339 states and 826 transitions. [2020-10-15 19:56:57,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:56:57,041 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:57,042 INFO L225 Difference]: With dead ends: 339 [2020-10-15 19:56:57,042 INFO L226 Difference]: Without dead ends: 335 [2020-10-15 19:56:57,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:56:57,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-15 19:56:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 264. [2020-10-15 19:56:57,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 19:56:57,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 677 transitions. [2020-10-15 19:56:57,047 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 677 transitions. Word has length 14 [2020-10-15 19:56:57,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:57,047 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 677 transitions. [2020-10-15 19:56:57,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:57,047 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 677 transitions. [2020-10-15 19:56:57,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:57,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:57,047 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:57,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:57,248 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:57,249 INFO L82 PathProgramCache]: Analyzing trace with hash -792218594, now seen corresponding path program 145 times [2020-10-15 19:56:57,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:57,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784868638] [2020-10-15 19:56:57,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:57,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784868638] [2020-10-15 19:56:57,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878452734] [2020-10-15 19:56:57,401 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:57,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:57,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:57,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:57,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:57,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478705955] [2020-10-15 19:56:57,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:57,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:57,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:57,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:57,623 INFO L87 Difference]: Start difference. First operand 264 states and 677 transitions. Second operand 17 states. [2020-10-15 19:56:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:57,766 INFO L93 Difference]: Finished difference Result 287 states and 713 transitions. [2020-10-15 19:56:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 19:56:57,767 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:57,768 INFO L225 Difference]: With dead ends: 287 [2020-10-15 19:56:57,768 INFO L226 Difference]: Without dead ends: 285 [2020-10-15 19:56:57,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-15 19:56:57,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-10-15 19:56:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 266. [2020-10-15 19:56:57,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 19:56:57,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 683 transitions. [2020-10-15 19:56:57,772 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 683 transitions. Word has length 14 [2020-10-15 19:56:57,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:57,772 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 683 transitions. [2020-10-15 19:56:57,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:57,773 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 683 transitions. [2020-10-15 19:56:57,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:57,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:57,773 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:57,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:57,974 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:57,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:57,974 INFO L82 PathProgramCache]: Analyzing trace with hash -792217633, now seen corresponding path program 146 times [2020-10-15 19:56:57,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:57,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908646815] [2020-10-15 19:56:57,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:57,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:58,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908646815] [2020-10-15 19:56:58,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753141084] [2020-10-15 19:56:58,114 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:58,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:56:58,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:58,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:58,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:58,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:58,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:58,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:58,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274449699] [2020-10-15 19:56:58,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:58,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:58,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:58,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:58,337 INFO L87 Difference]: Start difference. First operand 266 states and 683 transitions. Second operand 17 states. [2020-10-15 19:56:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:58,692 INFO L93 Difference]: Finished difference Result 317 states and 778 transitions. [2020-10-15 19:56:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:56:58,693 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:58,694 INFO L225 Difference]: With dead ends: 317 [2020-10-15 19:56:58,694 INFO L226 Difference]: Without dead ends: 314 [2020-10-15 19:56:58,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2020-10-15 19:56:58,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-15 19:56:58,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 264. [2020-10-15 19:56:58,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 19:56:58,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 677 transitions. [2020-10-15 19:56:58,698 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 677 transitions. Word has length 14 [2020-10-15 19:56:58,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:58,698 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 677 transitions. [2020-10-15 19:56:58,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:58,698 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 677 transitions. [2020-10-15 19:56:58,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:58,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:58,699 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:58,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:58,900 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:58,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:58,900 INFO L82 PathProgramCache]: Analyzing trace with hash -792188803, now seen corresponding path program 147 times [2020-10-15 19:56:58,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:58,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761904416] [2020-10-15 19:56:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:56:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:59,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761904416] [2020-10-15 19:56:59,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093883562] [2020-10-15 19:56:59,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:59,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:56:59,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:56:59,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:56:59,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:56:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:56:59,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:56:59,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:56:59,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110607579] [2020-10-15 19:56:59,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:56:59,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:56:59,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:56:59,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:56:59,298 INFO L87 Difference]: Start difference. First operand 264 states and 677 transitions. Second operand 17 states. [2020-10-15 19:56:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:56:59,724 INFO L93 Difference]: Finished difference Result 330 states and 807 transitions. [2020-10-15 19:56:59,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:56:59,726 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:56:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:56:59,727 INFO L225 Difference]: With dead ends: 330 [2020-10-15 19:56:59,727 INFO L226 Difference]: Without dead ends: 326 [2020-10-15 19:56:59,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:56:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-15 19:56:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 262. [2020-10-15 19:56:59,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-15 19:56:59,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 671 transitions. [2020-10-15 19:56:59,731 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 671 transitions. Word has length 14 [2020-10-15 19:56:59,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:56:59,732 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 671 transitions. [2020-10-15 19:56:59,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:56:59,732 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 671 transitions. [2020-10-15 19:56:59,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:56:59,732 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:56:59,732 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:56:59,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:56:59,933 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:56:59,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:56:59,933 INFO L82 PathProgramCache]: Analyzing trace with hash -771662804, now seen corresponding path program 148 times [2020-10-15 19:56:59,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:56:59,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811821731] [2020-10-15 19:56:59,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:56:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:00,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811821731] [2020-10-15 19:57:00,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67675467] [2020-10-15 19:57:00,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:00,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:57:00,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:00,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:00,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:00,310 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:00,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:00,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:00,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641166700] [2020-10-15 19:57:00,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:00,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:00,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:00,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:00,311 INFO L87 Difference]: Start difference. First operand 262 states and 671 transitions. Second operand 17 states. [2020-10-15 19:57:00,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:00,506 INFO L93 Difference]: Finished difference Result 278 states and 694 transitions. [2020-10-15 19:57:00,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 19:57:00,507 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:00,508 INFO L225 Difference]: With dead ends: 278 [2020-10-15 19:57:00,508 INFO L226 Difference]: Without dead ends: 276 [2020-10-15 19:57:00,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-15 19:57:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-15 19:57:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 262. [2020-10-15 19:57:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-15 19:57:00,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 671 transitions. [2020-10-15 19:57:00,512 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 671 transitions. Word has length 14 [2020-10-15 19:57:00,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:00,513 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 671 transitions. [2020-10-15 19:57:00,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:00,513 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 671 transitions. [2020-10-15 19:57:00,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:00,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:00,513 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:00,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:00,714 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:00,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:00,714 INFO L82 PathProgramCache]: Analyzing trace with hash -771661843, now seen corresponding path program 149 times [2020-10-15 19:57:00,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:00,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269615519] [2020-10-15 19:57:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:00,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269615519] [2020-10-15 19:57:00,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773177819] [2020-10-15 19:57:00,827 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:00,867 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:57:00,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:00,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:00,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:01,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:01,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:01,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:01,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730417716] [2020-10-15 19:57:01,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:01,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:01,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:01,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:01,062 INFO L87 Difference]: Start difference. First operand 262 states and 671 transitions. Second operand 17 states. [2020-10-15 19:57:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:01,457 INFO L93 Difference]: Finished difference Result 306 states and 753 transitions. [2020-10-15 19:57:01,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:57:01,458 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:01,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:01,459 INFO L225 Difference]: With dead ends: 306 [2020-10-15 19:57:01,459 INFO L226 Difference]: Without dead ends: 303 [2020-10-15 19:57:01,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=446, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:57:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-10-15 19:57:01,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 260. [2020-10-15 19:57:01,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 260 states. [2020-10-15 19:57:01,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 665 transitions. [2020-10-15 19:57:01,463 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 665 transitions. Word has length 14 [2020-10-15 19:57:01,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:01,463 INFO L481 AbstractCegarLoop]: Abstraction has 260 states and 665 transitions. [2020-10-15 19:57:01,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:01,463 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 665 transitions. [2020-10-15 19:57:01,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:01,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:01,464 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:01,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-10-15 19:57:01,664 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:01,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:01,665 INFO L82 PathProgramCache]: Analyzing trace with hash -770999714, now seen corresponding path program 150 times [2020-10-15 19:57:01,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:01,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792386241] [2020-10-15 19:57:01,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:01,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:01,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792386241] [2020-10-15 19:57:01,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472891794] [2020-10-15 19:57:01,786 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:01,826 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:57:01,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:01,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-15 19:57:01,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:01,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:01,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-15 19:57:01,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303479280] [2020-10-15 19:57:01,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 19:57:01,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:01,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 19:57:01,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-15 19:57:01,856 INFO L87 Difference]: Start difference. First operand 260 states and 665 transitions. Second operand 11 states. [2020-10-15 19:57:02,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:02,040 INFO L93 Difference]: Finished difference Result 269 states and 677 transitions. [2020-10-15 19:57:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 19:57:02,041 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-15 19:57:02,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:02,042 INFO L225 Difference]: With dead ends: 269 [2020-10-15 19:57:02,042 INFO L226 Difference]: Without dead ends: 267 [2020-10-15 19:57:02,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:57:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-15 19:57:02,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 256. [2020-10-15 19:57:02,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 19:57:02,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 659 transitions. [2020-10-15 19:57:02,051 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 659 transitions. Word has length 14 [2020-10-15 19:57:02,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:02,051 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 659 transitions. [2020-10-15 19:57:02,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 19:57:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 659 transitions. [2020-10-15 19:57:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:02,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:02,052 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:02,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:02,252 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:02,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:02,253 INFO L82 PathProgramCache]: Analyzing trace with hash -770977394, now seen corresponding path program 151 times [2020-10-15 19:57:02,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:02,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567540751] [2020-10-15 19:57:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:02,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:02,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567540751] [2020-10-15 19:57:02,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779133461] [2020-10-15 19:57:02,374 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:02,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:02,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:02,585 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:57:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:02,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:02,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:02,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943389080] [2020-10-15 19:57:02,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:02,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:02,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:02,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:02,633 INFO L87 Difference]: Start difference. First operand 256 states and 659 transitions. Second operand 17 states. [2020-10-15 19:57:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:03,189 INFO L93 Difference]: Finished difference Result 298 states and 754 transitions. [2020-10-15 19:57:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:57:03,191 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:03,191 INFO L225 Difference]: With dead ends: 298 [2020-10-15 19:57:03,191 INFO L226 Difference]: Without dead ends: 294 [2020-10-15 19:57:03,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-15 19:57:03,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-15 19:57:03,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 257. [2020-10-15 19:57:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-15 19:57:03,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 662 transitions. [2020-10-15 19:57:03,196 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 662 transitions. Word has length 14 [2020-10-15 19:57:03,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:03,197 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 662 transitions. [2020-10-15 19:57:03,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 662 transitions. [2020-10-15 19:57:03,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:03,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:03,198 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:03,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-15 19:57:03,408 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:03,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:03,409 INFO L82 PathProgramCache]: Analyzing trace with hash -770969923, now seen corresponding path program 152 times [2020-10-15 19:57:03,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:03,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42969933] [2020-10-15 19:57:03,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:03,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42969933] [2020-10-15 19:57:03,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582285513] [2020-10-15 19:57:03,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:03,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:57:03,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:03,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:03,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:03,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:03,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:03,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:03,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870053793] [2020-10-15 19:57:03,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:03,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:03,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:03,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:03,822 INFO L87 Difference]: Start difference. First operand 257 states and 662 transitions. Second operand 17 states. [2020-10-15 19:57:04,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:04,370 INFO L93 Difference]: Finished difference Result 313 states and 786 transitions. [2020-10-15 19:57:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 19:57:04,372 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:04,379 INFO L225 Difference]: With dead ends: 313 [2020-10-15 19:57:04,379 INFO L226 Difference]: Without dead ends: 310 [2020-10-15 19:57:04,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:57:04,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-10-15 19:57:04,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 259. [2020-10-15 19:57:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 19:57:04,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 669 transitions. [2020-10-15 19:57:04,384 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 669 transitions. Word has length 14 [2020-10-15 19:57:04,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:04,385 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 669 transitions. [2020-10-15 19:57:04,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 669 transitions. [2020-10-15 19:57:04,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:04,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:04,386 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:04,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:04,596 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:04,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:04,597 INFO L82 PathProgramCache]: Analyzing trace with hash -770948564, now seen corresponding path program 153 times [2020-10-15 19:57:04,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:04,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133749260] [2020-10-15 19:57:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:04,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133749260] [2020-10-15 19:57:04,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801664745] [2020-10-15 19:57:04,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:04,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:57:04,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:04,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:04,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:04,946 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:57:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:04,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:04,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:04,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680133666] [2020-10-15 19:57:04,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:04,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:04,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:04,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:04,984 INFO L87 Difference]: Start difference. First operand 259 states and 669 transitions. Second operand 17 states. [2020-10-15 19:57:05,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:05,653 INFO L93 Difference]: Finished difference Result 314 states and 795 transitions. [2020-10-15 19:57:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:57:05,654 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:05,655 INFO L225 Difference]: With dead ends: 314 [2020-10-15 19:57:05,655 INFO L226 Difference]: Without dead ends: 309 [2020-10-15 19:57:05,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-10-15 19:57:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-15 19:57:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 259. [2020-10-15 19:57:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 19:57:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 668 transitions. [2020-10-15 19:57:05,660 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 668 transitions. Word has length 14 [2020-10-15 19:57:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:05,660 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 668 transitions. [2020-10-15 19:57:05,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 668 transitions. [2020-10-15 19:57:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:05,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:05,661 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:05,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:05,864 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:05,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:05,864 INFO L82 PathProgramCache]: Analyzing trace with hash -770947603, now seen corresponding path program 154 times [2020-10-15 19:57:05,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:05,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568871809] [2020-10-15 19:57:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:05,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568871809] [2020-10-15 19:57:05,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921607995] [2020-10-15 19:57:05,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:06,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:57:06,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:06,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:06,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:06,199 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:57:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:06,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:06,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:06,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126822880] [2020-10-15 19:57:06,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:06,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:06,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:06,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:06,245 INFO L87 Difference]: Start difference. First operand 259 states and 668 transitions. Second operand 17 states. [2020-10-15 19:57:06,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:06,884 INFO L93 Difference]: Finished difference Result 333 states and 837 transitions. [2020-10-15 19:57:06,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:57:06,885 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:06,885 INFO L225 Difference]: With dead ends: 333 [2020-10-15 19:57:06,885 INFO L226 Difference]: Without dead ends: 328 [2020-10-15 19:57:06,886 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-15 19:57:06,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-15 19:57:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 259. [2020-10-15 19:57:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 19:57:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 671 transitions. [2020-10-15 19:57:06,890 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 671 transitions. Word has length 14 [2020-10-15 19:57:06,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:06,890 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 671 transitions. [2020-10-15 19:57:06,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 671 transitions. [2020-10-15 19:57:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:06,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:06,892 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:07,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-10-15 19:57:07,103 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:07,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:07,103 INFO L82 PathProgramCache]: Analyzing trace with hash -770739283, now seen corresponding path program 155 times [2020-10-15 19:57:07,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:07,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524374677] [2020-10-15 19:57:07,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:07,211 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:07,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524374677] [2020-10-15 19:57:07,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565516556] [2020-10-15 19:57:07,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:07,252 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:57:07,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:07,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:07,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:07,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:07,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:07,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492601678] [2020-10-15 19:57:07,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:07,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:07,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:07,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:07,510 INFO L87 Difference]: Start difference. First operand 259 states and 671 transitions. Second operand 17 states. [2020-10-15 19:57:07,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:07,997 INFO L93 Difference]: Finished difference Result 350 states and 873 transitions. [2020-10-15 19:57:07,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:57:07,999 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:07,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:08,000 INFO L225 Difference]: With dead ends: 350 [2020-10-15 19:57:08,000 INFO L226 Difference]: Without dead ends: 346 [2020-10-15 19:57:08,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:57:08,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-15 19:57:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 261. [2020-10-15 19:57:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-15 19:57:08,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 678 transitions. [2020-10-15 19:57:08,004 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 678 transitions. Word has length 14 [2020-10-15 19:57:08,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:08,005 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 678 transitions. [2020-10-15 19:57:08,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:08,005 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 678 transitions. [2020-10-15 19:57:08,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:08,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:08,005 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:08,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:08,206 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:08,206 INFO L82 PathProgramCache]: Analyzing trace with hash -770076193, now seen corresponding path program 156 times [2020-10-15 19:57:08,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:08,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989051815] [2020-10-15 19:57:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:08,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989051815] [2020-10-15 19:57:08,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322041076] [2020-10-15 19:57:08,315 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:08,355 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:57:08,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:08,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:08,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:08,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:08,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:08,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475769580] [2020-10-15 19:57:08,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:08,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:08,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:08,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:08,620 INFO L87 Difference]: Start difference. First operand 261 states and 678 transitions. Second operand 17 states. [2020-10-15 19:57:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:09,266 INFO L93 Difference]: Finished difference Result 362 states and 911 transitions. [2020-10-15 19:57:09,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:57:09,266 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:09,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:09,267 INFO L225 Difference]: With dead ends: 362 [2020-10-15 19:57:09,267 INFO L226 Difference]: Without dead ends: 358 [2020-10-15 19:57:09,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=272, Invalid=598, Unknown=0, NotChecked=0, Total=870 [2020-10-15 19:57:09,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-15 19:57:09,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 265. [2020-10-15 19:57:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-15 19:57:09,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 692 transitions. [2020-10-15 19:57:09,271 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 692 transitions. Word has length 14 [2020-10-15 19:57:09,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:09,272 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 692 transitions. [2020-10-15 19:57:09,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:09,272 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 692 transitions. [2020-10-15 19:57:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:09,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:09,272 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:09,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:09,473 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:09,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:09,473 INFO L82 PathProgramCache]: Analyzing trace with hash -770054834, now seen corresponding path program 157 times [2020-10-15 19:57:09,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:09,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995506883] [2020-10-15 19:57:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:09,578 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:09,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995506883] [2020-10-15 19:57:09,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058728666] [2020-10-15 19:57:09,579 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:09,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:09,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:09,815 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:57:09,859 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:09,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:09,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:09,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063523306] [2020-10-15 19:57:09,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:09,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:09,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:09,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:09,861 INFO L87 Difference]: Start difference. First operand 265 states and 692 transitions. Second operand 17 states. [2020-10-15 19:57:10,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:10,698 INFO L93 Difference]: Finished difference Result 322 states and 822 transitions. [2020-10-15 19:57:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 19:57:10,699 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:10,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:10,699 INFO L225 Difference]: With dead ends: 322 [2020-10-15 19:57:10,700 INFO L226 Difference]: Without dead ends: 316 [2020-10-15 19:57:10,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=358, Invalid=698, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 19:57:10,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-15 19:57:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 265. [2020-10-15 19:57:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-15 19:57:10,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 690 transitions. [2020-10-15 19:57:10,705 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 690 transitions. Word has length 14 [2020-10-15 19:57:10,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:10,705 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 690 transitions. [2020-10-15 19:57:10,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:10,705 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 690 transitions. [2020-10-15 19:57:10,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:10,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:10,706 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:10,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:10,906 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash -770053873, now seen corresponding path program 158 times [2020-10-15 19:57:10,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:10,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970385345] [2020-10-15 19:57:10,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:11,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970385345] [2020-10-15 19:57:11,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927635023] [2020-10-15 19:57:11,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:11,056 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:57:11,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:11,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:11,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:13,303 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:57:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:13,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:13,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:13,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171177885] [2020-10-15 19:57:13,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:13,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:13,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:13,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=185, Unknown=1, NotChecked=0, Total=272 [2020-10-15 19:57:13,350 INFO L87 Difference]: Start difference. First operand 265 states and 690 transitions. Second operand 17 states. [2020-10-15 19:57:17,671 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-15 19:57:19,830 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-15 19:57:23,959 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-15 19:57:26,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:26,626 INFO L93 Difference]: Finished difference Result 395 states and 997 transitions. [2020-10-15 19:57:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 19:57:26,627 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:26,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:26,628 INFO L225 Difference]: With dead ends: 395 [2020-10-15 19:57:26,629 INFO L226 Difference]: Without dead ends: 386 [2020-10-15 19:57:26,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=370, Invalid=819, Unknown=1, NotChecked=0, Total=1190 [2020-10-15 19:57:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-15 19:57:26,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 262. [2020-10-15 19:57:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-15 19:57:26,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 685 transitions. [2020-10-15 19:57:26,633 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 685 transitions. Word has length 14 [2020-10-15 19:57:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:26,633 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 685 transitions. [2020-10-15 19:57:26,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 685 transitions. [2020-10-15 19:57:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:26,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:26,634 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:26,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:26,834 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:26,835 INFO L82 PathProgramCache]: Analyzing trace with hash -770025043, now seen corresponding path program 159 times [2020-10-15 19:57:26,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:26,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956419223] [2020-10-15 19:57:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:26,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956419223] [2020-10-15 19:57:26,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198589855] [2020-10-15 19:57:26,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:26,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:57:26,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:26,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:26,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:27,199 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:57:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:27,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:27,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:27,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108185817] [2020-10-15 19:57:27,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:27,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:27,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:27,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:27,242 INFO L87 Difference]: Start difference. First operand 262 states and 685 transitions. Second operand 17 states. [2020-10-15 19:57:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:28,060 INFO L93 Difference]: Finished difference Result 358 states and 909 transitions. [2020-10-15 19:57:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 19:57:28,061 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:28,062 INFO L225 Difference]: With dead ends: 358 [2020-10-15 19:57:28,062 INFO L226 Difference]: Without dead ends: 353 [2020-10-15 19:57:28,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=338, Invalid=718, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 19:57:28,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-15 19:57:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 262. [2020-10-15 19:57:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-15 19:57:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 685 transitions. [2020-10-15 19:57:28,066 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 685 transitions. Word has length 14 [2020-10-15 19:57:28,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:28,066 INFO L481 AbstractCegarLoop]: Abstraction has 262 states and 685 transitions. [2020-10-15 19:57:28,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 685 transitions. [2020-10-15 19:57:28,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:28,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:28,067 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:28,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:28,267 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:28,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:28,268 INFO L82 PathProgramCache]: Analyzing trace with hash -763589443, now seen corresponding path program 160 times [2020-10-15 19:57:28,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:28,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238788225] [2020-10-15 19:57:28,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:28,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238788225] [2020-10-15 19:57:28,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530028239] [2020-10-15 19:57:28,372 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:28,412 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:57:28,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:28,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:28,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:28,669 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:28,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:28,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:28,670 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885890797] [2020-10-15 19:57:28,670 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:28,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:28,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:28,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:28,670 INFO L87 Difference]: Start difference. First operand 262 states and 685 transitions. Second operand 17 states. [2020-10-15 19:57:29,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:29,178 INFO L93 Difference]: Finished difference Result 350 states and 871 transitions. [2020-10-15 19:57:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:57:29,179 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:29,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:29,179 INFO L225 Difference]: With dead ends: 350 [2020-10-15 19:57:29,180 INFO L226 Difference]: Without dead ends: 347 [2020-10-15 19:57:29,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:57:29,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2020-10-15 19:57:29,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 265. [2020-10-15 19:57:29,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-15 19:57:29,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 696 transitions. [2020-10-15 19:57:29,184 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 696 transitions. Word has length 14 [2020-10-15 19:57:29,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:29,185 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 696 transitions. [2020-10-15 19:57:29,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:29,185 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 696 transitions. [2020-10-15 19:57:29,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:29,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:29,185 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:29,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:29,386 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:29,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:29,387 INFO L82 PathProgramCache]: Analyzing trace with hash -763588482, now seen corresponding path program 161 times [2020-10-15 19:57:29,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:29,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206253047] [2020-10-15 19:57:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206253047] [2020-10-15 19:57:29,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842761631] [2020-10-15 19:57:29,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:29,535 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:57:29,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:29,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:29,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:33,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:33,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:33,655 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908871322] [2020-10-15 19:57:33,655 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:33,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:33,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:33,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=212, Unknown=1, NotChecked=0, Total=272 [2020-10-15 19:57:33,656 INFO L87 Difference]: Start difference. First operand 265 states and 696 transitions. Second operand 17 states. [2020-10-15 19:57:37,998 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-15 19:57:44,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:44,435 INFO L93 Difference]: Finished difference Result 380 states and 945 transitions. [2020-10-15 19:57:44,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:57:44,437 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:44,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:44,438 INFO L225 Difference]: With dead ends: 380 [2020-10-15 19:57:44,438 INFO L226 Difference]: Without dead ends: 375 [2020-10-15 19:57:44,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=193, Invalid=508, Unknown=1, NotChecked=0, Total=702 [2020-10-15 19:57:44,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-15 19:57:44,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 266. [2020-10-15 19:57:44,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 19:57:44,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 698 transitions. [2020-10-15 19:57:44,443 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 698 transitions. Word has length 14 [2020-10-15 19:57:44,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:44,443 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 698 transitions. [2020-10-15 19:57:44,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:44,444 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 698 transitions. [2020-10-15 19:57:44,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:44,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:44,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:44,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-15 19:57:44,645 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:44,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:44,645 INFO L82 PathProgramCache]: Analyzing trace with hash -763559652, now seen corresponding path program 162 times [2020-10-15 19:57:44,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:44,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880499001] [2020-10-15 19:57:44,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:44,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:44,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:44,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880499001] [2020-10-15 19:57:44,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293985439] [2020-10-15 19:57:44,754 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:44,798 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:57:44,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:44,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:44,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:45,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:45,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:45,082 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:45,082 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716798398] [2020-10-15 19:57:45,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:45,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:45,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:45,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:45,082 INFO L87 Difference]: Start difference. First operand 266 states and 698 transitions. Second operand 17 states. [2020-10-15 19:57:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:45,626 INFO L93 Difference]: Finished difference Result 366 states and 912 transitions. [2020-10-15 19:57:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:57:45,628 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:45,629 INFO L225 Difference]: With dead ends: 366 [2020-10-15 19:57:45,629 INFO L226 Difference]: Without dead ends: 362 [2020-10-15 19:57:45,629 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:57:45,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-10-15 19:57:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 264. [2020-10-15 19:57:45,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 19:57:45,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 692 transitions. [2020-10-15 19:57:45,634 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 692 transitions. Word has length 14 [2020-10-15 19:57:45,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:45,634 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 692 transitions. [2020-10-15 19:57:45,634 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 692 transitions. [2020-10-15 19:57:45,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:45,634 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:45,635 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:45,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2020-10-15 19:57:45,840 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:45,840 INFO L82 PathProgramCache]: Analyzing trace with hash -743033653, now seen corresponding path program 163 times [2020-10-15 19:57:45,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:45,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705557169] [2020-10-15 19:57:45,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:45,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:45,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705557169] [2020-10-15 19:57:45,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801938146] [2020-10-15 19:57:45,971 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:46,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:46,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:48,201 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:48,201 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:48,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621790185] [2020-10-15 19:57:48,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:48,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:48,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:48,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:48,202 INFO L87 Difference]: Start difference. First operand 264 states and 692 transitions. Second operand 17 states. [2020-10-15 19:57:49,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:57:49,020 INFO L93 Difference]: Finished difference Result 357 states and 890 transitions. [2020-10-15 19:57:49,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 19:57:49,021 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:57:49,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:57:49,022 INFO L225 Difference]: With dead ends: 357 [2020-10-15 19:57:49,023 INFO L226 Difference]: Without dead ends: 354 [2020-10-15 19:57:49,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=290, Invalid=702, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:57:49,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-15 19:57:49,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 266. [2020-10-15 19:57:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 19:57:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 700 transitions. [2020-10-15 19:57:49,029 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 700 transitions. Word has length 14 [2020-10-15 19:57:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:57:49,029 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 700 transitions. [2020-10-15 19:57:49,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:57:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 700 transitions. [2020-10-15 19:57:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:57:49,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:57:49,030 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:57:49,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2020-10-15 19:57:49,234 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:57:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:57:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash -743032692, now seen corresponding path program 164 times [2020-10-15 19:57:49,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:57:49,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384733832] [2020-10-15 19:57:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:57:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:57:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:49,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384733832] [2020-10-15 19:57:49,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667214240] [2020-10-15 19:57:49,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:57:49,393 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:57:49,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:57:49,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:57:49,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:57:50,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:57:50,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:57:50,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:57:50,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313654026] [2020-10-15 19:57:50,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:57:50,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:57:50,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:57:50,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:57:50,724 INFO L87 Difference]: Start difference. First operand 266 states and 700 transitions. Second operand 17 states. [2020-10-15 19:57:55,154 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-15 19:58:09,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:58:09,908 INFO L93 Difference]: Finished difference Result 401 states and 995 transitions. [2020-10-15 19:58:09,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 19:58:09,909 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:58:09,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:58:09,910 INFO L225 Difference]: With dead ends: 401 [2020-10-15 19:58:09,910 INFO L226 Difference]: Without dead ends: 396 [2020-10-15 19:58:09,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 14.2s TimeCoverageRelationStatistics Valid=289, Invalid=699, Unknown=4, NotChecked=0, Total=992 [2020-10-15 19:58:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-15 19:58:09,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 269. [2020-10-15 19:58:09,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 19:58:09,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 709 transitions. [2020-10-15 19:58:09,916 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 709 transitions. Word has length 14 [2020-10-15 19:58:09,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:58:09,916 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 709 transitions. [2020-10-15 19:58:09,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:58:09,917 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 709 transitions. [2020-10-15 19:58:09,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:58:09,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:58:09,917 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:58:10,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:58:10,128 INFO L429 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:58:10,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:58:10,128 INFO L82 PathProgramCache]: Analyzing trace with hash -742370563, now seen corresponding path program 165 times [2020-10-15 19:58:10,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:58:10,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962803292] [2020-10-15 19:58:10,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:58:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:58:10,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:10,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962803292] [2020-10-15 19:58:10,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943039437] [2020-10-15 19:58:10,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:58:10,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:58:10,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:58:10,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:58:10,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:58:10,559 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:10,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:58:10,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:58:10,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649659762] [2020-10-15 19:58:10,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:58:10,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:58:10,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:58:10,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:58:10,561 INFO L87 Difference]: Start difference. First operand 269 states and 709 transitions. Second operand 17 states. [2020-10-15 19:58:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:58:11,388 INFO L93 Difference]: Finished difference Result 352 states and 890 transitions. [2020-10-15 19:58:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 19:58:11,389 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:58:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:58:11,390 INFO L225 Difference]: With dead ends: 352 [2020-10-15 19:58:11,390 INFO L226 Difference]: Without dead ends: 349 [2020-10-15 19:58:11,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=313, Invalid=679, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:58:11,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-10-15 19:58:11,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 271. [2020-10-15 19:58:11,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 19:58:11,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 716 transitions. [2020-10-15 19:58:11,395 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 716 transitions. Word has length 14 [2020-10-15 19:58:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:58:11,395 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 716 transitions. [2020-10-15 19:58:11,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:58:11,395 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 716 transitions. [2020-10-15 19:58:11,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:58:11,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:58:11,395 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:58:11,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193,187 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:58:11,596 INFO L429 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:58:11,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:58:11,597 INFO L82 PathProgramCache]: Analyzing trace with hash -742349204, now seen corresponding path program 166 times [2020-10-15 19:58:11,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:58:11,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906021233] [2020-10-15 19:58:11,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:58:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:58:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:11,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906021233] [2020-10-15 19:58:11,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568952116] [2020-10-15 19:58:11,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:58:11,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:58:11,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:58:11,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:58:11,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:58:11,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:58:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:12,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:58:12,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:58:12,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973487048] [2020-10-15 19:58:12,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:58:12,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:58:12,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:58:12,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:58:12,017 INFO L87 Difference]: Start difference. First operand 271 states and 716 transitions. Second operand 17 states. [2020-10-15 19:58:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:58:13,037 INFO L93 Difference]: Finished difference Result 323 states and 827 transitions. [2020-10-15 19:58:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 19:58:13,038 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:58:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:58:13,038 INFO L225 Difference]: With dead ends: 323 [2020-10-15 19:58:13,038 INFO L226 Difference]: Without dead ends: 316 [2020-10-15 19:58:13,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=394, Invalid=796, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 19:58:13,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-15 19:58:13,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 271. [2020-10-15 19:58:13,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 19:58:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 713 transitions. [2020-10-15 19:58:13,043 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 713 transitions. Word has length 14 [2020-10-15 19:58:13,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:58:13,044 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 713 transitions. [2020-10-15 19:58:13,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:58:13,044 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 713 transitions. [2020-10-15 19:58:13,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:58:13,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:58:13,044 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:58:13,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 188 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2020-10-15 19:58:13,245 INFO L429 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:58:13,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:58:13,246 INFO L82 PathProgramCache]: Analyzing trace with hash -742348243, now seen corresponding path program 167 times [2020-10-15 19:58:13,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:58:13,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34051070] [2020-10-15 19:58:13,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:58:13,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:58:13,377 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:13,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34051070] [2020-10-15 19:58:13,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125485322] [2020-10-15 19:58:13,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:58:13,417 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:58:13,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:58:13,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:58:13,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:58:13,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:13,644 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:13,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:13,645 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:13,647 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:13,647 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:13,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:13,650 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:13,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:13,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:58:13,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:58:13,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463232486] [2020-10-15 19:58:13,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:58:13,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:58:13,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:58:13,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:58:13,724 INFO L87 Difference]: Start difference. First operand 271 states and 713 transitions. Second operand 17 states. [2020-10-15 19:58:14,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:58:14,946 INFO L93 Difference]: Finished difference Result 384 states and 973 transitions. [2020-10-15 19:58:14,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:58:14,948 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:58:14,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:58:14,949 INFO L225 Difference]: With dead ends: 384 [2020-10-15 19:58:14,949 INFO L226 Difference]: Without dead ends: 379 [2020-10-15 19:58:14,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=411, Invalid=921, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 19:58:14,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-15 19:58:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 269. [2020-10-15 19:58:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 19:58:14,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 707 transitions. [2020-10-15 19:58:14,954 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 707 transitions. Word has length 14 [2020-10-15 19:58:14,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:58:14,954 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 707 transitions. [2020-10-15 19:58:14,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:58:14,954 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 707 transitions. [2020-10-15 19:58:14,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:58:14,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:58:14,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:58:15,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,189 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:58:15,155 INFO L429 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:58:15,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:58:15,156 INFO L82 PathProgramCache]: Analyzing trace with hash -742340772, now seen corresponding path program 168 times [2020-10-15 19:58:15,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:58:15,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182683742] [2020-10-15 19:58:15,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:58:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:58:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:15,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182683742] [2020-10-15 19:58:15,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047814530] [2020-10-15 19:58:15,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:58:15,321 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:58:15,321 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:58:15,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:58:15,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:58:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:17,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:58:17,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:58:17,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775011634] [2020-10-15 19:58:17,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:58:17,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:58:17,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:58:17,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=196, Unknown=1, NotChecked=0, Total=272 [2020-10-15 19:58:17,716 INFO L87 Difference]: Start difference. First operand 269 states and 707 transitions. Second operand 17 states. [2020-10-15 19:58:22,093 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-15 19:58:26,357 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-15 19:58:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:58:27,023 INFO L93 Difference]: Finished difference Result 403 states and 1011 transitions. [2020-10-15 19:58:27,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 19:58:27,025 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:58:27,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:58:27,026 INFO L225 Difference]: With dead ends: 403 [2020-10-15 19:58:27,026 INFO L226 Difference]: Without dead ends: 398 [2020-10-15 19:58:27,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=348, Invalid=841, Unknown=1, NotChecked=0, Total=1190 [2020-10-15 19:58:27,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-15 19:58:27,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 273. [2020-10-15 19:58:27,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-15 19:58:27,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 721 transitions. [2020-10-15 19:58:27,031 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 721 transitions. Word has length 14 [2020-10-15 19:58:27,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:58:27,031 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 721 transitions. [2020-10-15 19:58:27,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:58:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 721 transitions. [2020-10-15 19:58:27,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:58:27,031 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:58:27,032 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:58:27,233 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 190 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable196 [2020-10-15 19:58:27,234 INFO L429 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:58:27,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:58:27,234 INFO L82 PathProgramCache]: Analyzing trace with hash -742319413, now seen corresponding path program 169 times [2020-10-15 19:58:27,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:58:27,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146129201] [2020-10-15 19:58:27,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:58:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:58:27,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:27,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146129201] [2020-10-15 19:58:27,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946285693] [2020-10-15 19:58:27,375 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:58:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:58:27,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:58:27,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:58:31,082 WARN L860 $PredicateComparison]: unable to prove that (exists ((aux_div_aux_mod_v_~j~0_491_43_92 Int) (v_~i~0_529 Int) (aux_div_v_~j~0_491_43 Int)) (let ((.cse1 (* 2 aux_div_aux_mod_v_~j~0_491_43_92)) (.cse0 (* 2 aux_div_v_~j~0_491_43))) (and (<= aux_div_v_~j~0_491_43 1) (<= (+ c_~j~0 .cse0) (* 2 v_~i~0_529)) (<= (+ .cse1 .cse0 1) v_~i~0_529) (<= c_~i~0 (+ v_~i~0_529 c_~j~0)) (<= aux_div_aux_mod_v_~j~0_491_43_92 1) (<= c_~j~0 (+ .cse1 v_~i~0_529 2)) (<= v_~i~0_529 (+ .cse1 .cse0 3))))) is different from true [2020-10-15 19:58:31,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:58:31,088 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:58:31,148 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:58:31,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:58:31,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:58:31,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186659805] [2020-10-15 19:58:31,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:58:31,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:58:31,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:58:31,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=162, Unknown=2, NotChecked=28, Total=272 [2020-10-15 19:58:31,150 INFO L87 Difference]: Start difference. First operand 273 states and 721 transitions. Second operand 17 states. [2020-10-15 19:58:35,657 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-15 19:58:41,999 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-15 19:58:46,596 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2020-10-15 19:58:57,519 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-10-15 19:58:58,697 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2020-10-15 19:59:01,364 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 33 DAG size of output: 29 [2020-10-15 19:59:01,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:01,617 INFO L93 Difference]: Finished difference Result 441 states and 1132 transitions. [2020-10-15 19:59:01,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 19:59:01,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:01,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:01,620 INFO L225 Difference]: With dead ends: 441 [2020-10-15 19:59:01,620 INFO L226 Difference]: Without dead ends: 434 [2020-10-15 19:59:01,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 9 SemanticMatches, 39 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=482, Invalid=1065, Unknown=17, NotChecked=76, Total=1640 [2020-10-15 19:59:01,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-15 19:59:01,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 274. [2020-10-15 19:59:01,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 19:59:01,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 726 transitions. [2020-10-15 19:59:01,625 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 726 transitions. Word has length 14 [2020-10-15 19:59:01,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:01,625 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 726 transitions. [2020-10-15 19:59:01,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:01,626 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 726 transitions. [2020-10-15 19:59:01,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:01,626 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:01,626 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:01,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,191 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:01,827 INFO L429 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:01,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:01,827 INFO L82 PathProgramCache]: Analyzing trace with hash -742318452, now seen corresponding path program 170 times [2020-10-15 19:59:01,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:01,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720692071] [2020-10-15 19:59:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:01,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720692071] [2020-10-15 19:59:01,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183243917] [2020-10-15 19:59:01,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:01,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:59:01,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:01,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:01,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:04,288 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:59:04,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:04,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:04,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:04,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045360239] [2020-10-15 19:59:04,337 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:04,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:04,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:04,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=189, Unknown=1, NotChecked=0, Total=272 [2020-10-15 19:59:04,337 INFO L87 Difference]: Start difference. First operand 274 states and 726 transitions. Second operand 17 states. [2020-10-15 19:59:06,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:06,122 INFO L93 Difference]: Finished difference Result 425 states and 1076 transitions. [2020-10-15 19:59:06,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:59:06,123 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:06,124 INFO L225 Difference]: With dead ends: 425 [2020-10-15 19:59:06,125 INFO L226 Difference]: Without dead ends: 415 [2020-10-15 19:59:06,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=425, Invalid=980, Unknown=1, NotChecked=0, Total=1406 [2020-10-15 19:59:06,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-10-15 19:59:06,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 268. [2020-10-15 19:59:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 19:59:06,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 712 transitions. [2020-10-15 19:59:06,129 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 712 transitions. Word has length 14 [2020-10-15 19:59:06,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:06,130 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 712 transitions. [2020-10-15 19:59:06,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:06,130 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 712 transitions. [2020-10-15 19:59:06,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:06,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:06,130 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:06,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,192 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:06,331 INFO L429 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:06,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:06,332 INFO L82 PathProgramCache]: Analyzing trace with hash -742110132, now seen corresponding path program 171 times [2020-10-15 19:59:06,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:06,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220964917] [2020-10-15 19:59:06,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:06,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:06,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220964917] [2020-10-15 19:59:06,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486559730] [2020-10-15 19:59:06,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:06,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:59:06,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:06,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:06,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:06,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:06,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:06,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750088799] [2020-10-15 19:59:06,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:06,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:06,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:06,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:06,807 INFO L87 Difference]: Start difference. First operand 268 states and 712 transitions. Second operand 17 states. [2020-10-15 19:59:07,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:07,424 INFO L93 Difference]: Finished difference Result 368 states and 929 transitions. [2020-10-15 19:59:07,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 19:59:07,426 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:07,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:07,427 INFO L225 Difference]: With dead ends: 368 [2020-10-15 19:59:07,427 INFO L226 Difference]: Without dead ends: 364 [2020-10-15 19:59:07,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:59:07,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2020-10-15 19:59:07,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 267. [2020-10-15 19:59:07,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-15 19:59:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 709 transitions. [2020-10-15 19:59:07,432 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 709 transitions. Word has length 14 [2020-10-15 19:59:07,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:07,432 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 709 transitions. [2020-10-15 19:59:07,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 709 transitions. [2020-10-15 19:59:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:07,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:07,433 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:07,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 193 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable199 [2020-10-15 19:59:07,634 INFO L429 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:07,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:07,634 INFO L82 PathProgramCache]: Analyzing trace with hash -741447042, now seen corresponding path program 172 times [2020-10-15 19:59:07,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:07,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564776153] [2020-10-15 19:59:07,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:07,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:07,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564776153] [2020-10-15 19:59:07,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037724951] [2020-10-15 19:59:07,762 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:07,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:59:07,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:07,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:07,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:08,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:08,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:08,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360492053] [2020-10-15 19:59:08,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:08,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:08,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:08,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:08,131 INFO L87 Difference]: Start difference. First operand 267 states and 709 transitions. Second operand 17 states. [2020-10-15 19:59:09,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:09,113 INFO L93 Difference]: Finished difference Result 384 states and 970 transitions. [2020-10-15 19:59:09,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 19:59:09,114 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:09,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:09,115 INFO L225 Difference]: With dead ends: 384 [2020-10-15 19:59:09,115 INFO L226 Difference]: Without dead ends: 380 [2020-10-15 19:59:09,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=300, Invalid=692, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:59:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-15 19:59:09,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 268. [2020-10-15 19:59:09,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 19:59:09,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 711 transitions. [2020-10-15 19:59:09,119 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 711 transitions. Word has length 14 [2020-10-15 19:59:09,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:09,119 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 711 transitions. [2020-10-15 19:59:09,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 711 transitions. [2020-10-15 19:59:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:09,120 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:09,120 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:09,320 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 194 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2020-10-15 19:59:09,321 INFO L429 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:09,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash -741424722, now seen corresponding path program 173 times [2020-10-15 19:59:09,321 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:09,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260493827] [2020-10-15 19:59:09,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:09,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260493827] [2020-10-15 19:59:09,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567816003] [2020-10-15 19:59:09,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:09,494 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:59:09,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:09,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:09,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:09,759 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:59:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:09,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:09,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:09,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356729811] [2020-10-15 19:59:09,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:09,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:09,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:09,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:09,796 INFO L87 Difference]: Start difference. First operand 268 states and 711 transitions. Second operand 17 states. [2020-10-15 19:59:11,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:11,252 INFO L93 Difference]: Finished difference Result 416 states and 1051 transitions. [2020-10-15 19:59:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:59:11,254 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:11,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:11,255 INFO L225 Difference]: With dead ends: 416 [2020-10-15 19:59:11,255 INFO L226 Difference]: Without dead ends: 410 [2020-10-15 19:59:11,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=426, Invalid=980, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 19:59:11,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-15 19:59:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 266. [2020-10-15 19:59:11,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 19:59:11,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 704 transitions. [2020-10-15 19:59:11,261 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 704 transitions. Word has length 14 [2020-10-15 19:59:11,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:11,261 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 704 transitions. [2020-10-15 19:59:11,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:11,261 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 704 transitions. [2020-10-15 19:59:11,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:11,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:11,262 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:11,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 195 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2020-10-15 19:59:11,467 INFO L429 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:11,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:11,467 INFO L82 PathProgramCache]: Analyzing trace with hash -541944403, now seen corresponding path program 174 times [2020-10-15 19:59:11,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:11,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355564329] [2020-10-15 19:59:11,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:11,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355564329] [2020-10-15 19:59:11,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545741777] [2020-10-15 19:59:11,592 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:11,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:59:11,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:11,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:11,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:11,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:11,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:11,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348005818] [2020-10-15 19:59:11,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:11,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:11,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:11,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:11,886 INFO L87 Difference]: Start difference. First operand 266 states and 704 transitions. Second operand 17 states. [2020-10-15 19:59:12,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:12,429 INFO L93 Difference]: Finished difference Result 355 states and 889 transitions. [2020-10-15 19:59:12,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:59:12,430 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:12,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:12,431 INFO L225 Difference]: With dead ends: 355 [2020-10-15 19:59:12,431 INFO L226 Difference]: Without dead ends: 352 [2020-10-15 19:59:12,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:59:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-15 19:59:12,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 270. [2020-10-15 19:59:12,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 19:59:12,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-15 19:59:12,436 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-15 19:59:12,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:12,436 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-15 19:59:12,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:12,436 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-15 19:59:12,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:12,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:12,437 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:12,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 196 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2020-10-15 19:59:12,638 INFO L429 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:12,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:12,638 INFO L82 PathProgramCache]: Analyzing trace with hash -541943442, now seen corresponding path program 175 times [2020-10-15 19:59:12,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:12,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484925392] [2020-10-15 19:59:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:12,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:12,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484925392] [2020-10-15 19:59:12,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676986572] [2020-10-15 19:59:12,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:12,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:12,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:12,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:13,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:13,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:13,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:13,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16970417] [2020-10-15 19:59:13,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:13,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:13,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:13,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:13,071 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-15 19:59:13,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:13,667 INFO L93 Difference]: Finished difference Result 390 states and 972 transitions. [2020-10-15 19:59:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 19:59:13,669 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:13,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:13,670 INFO L225 Difference]: With dead ends: 390 [2020-10-15 19:59:13,670 INFO L226 Difference]: Without dead ends: 385 [2020-10-15 19:59:13,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2020-10-15 19:59:13,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-10-15 19:59:13,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 271. [2020-10-15 19:59:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 19:59:13,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-15 19:59:13,674 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-15 19:59:13,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:13,675 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-15 19:59:13,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:13,675 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-15 19:59:13,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:13,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:13,675 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:13,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 197 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2020-10-15 19:59:13,876 INFO L429 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:13,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:13,877 INFO L82 PathProgramCache]: Analyzing trace with hash -541914612, now seen corresponding path program 176 times [2020-10-15 19:59:13,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:13,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727297936] [2020-10-15 19:59:13,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:14,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727297936] [2020-10-15 19:59:14,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512204026] [2020-10-15 19:59:14,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:14,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:59:14,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:14,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:14,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:14,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:14,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:14,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635935339] [2020-10-15 19:59:14,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:14,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:14,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:14,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:14,307 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-15 19:59:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:14,802 INFO L93 Difference]: Finished difference Result 392 states and 981 transitions. [2020-10-15 19:59:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 19:59:14,803 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:14,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:14,804 INFO L225 Difference]: With dead ends: 392 [2020-10-15 19:59:14,804 INFO L226 Difference]: Without dead ends: 387 [2020-10-15 19:59:14,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2020-10-15 19:59:14,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-15 19:59:14,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 270. [2020-10-15 19:59:14,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 19:59:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-15 19:59:14,810 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-15 19:59:14,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:14,810 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-15 19:59:14,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:14,810 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-15 19:59:14,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:14,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:14,811 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:15,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 198 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable204 [2020-10-15 19:59:15,023 INFO L429 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:15,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:15,024 INFO L82 PathProgramCache]: Analyzing trace with hash -540990130, now seen corresponding path program 177 times [2020-10-15 19:59:15,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:15,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958818703] [2020-10-15 19:59:15,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:15,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958818703] [2020-10-15 19:59:15,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14256075] [2020-10-15 19:59:15,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:15,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:59:15,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:15,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:15,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:15,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:15,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:15,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:15,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663686288] [2020-10-15 19:59:15,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:15,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:15,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:15,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:15,456 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-15 19:59:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:15,909 INFO L93 Difference]: Finished difference Result 359 states and 898 transitions. [2020-10-15 19:59:15,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 19:59:15,911 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:15,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:15,912 INFO L225 Difference]: With dead ends: 359 [2020-10-15 19:59:15,912 INFO L226 Difference]: Without dead ends: 343 [2020-10-15 19:59:15,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-15 19:59:15,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-15 19:59:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 268. [2020-10-15 19:59:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 19:59:15,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 710 transitions. [2020-10-15 19:59:15,917 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 710 transitions. Word has length 14 [2020-10-15 19:59:15,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:15,917 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 710 transitions. [2020-10-15 19:59:15,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:15,917 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 710 transitions. [2020-10-15 19:59:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:15,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:15,918 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:16,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,199 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:16,118 INFO L429 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:16,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:16,119 INFO L82 PathProgramCache]: Analyzing trace with hash 95285087, now seen corresponding path program 178 times [2020-10-15 19:59:16,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:16,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774862210] [2020-10-15 19:59:16,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:16,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774862210] [2020-10-15 19:59:16,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594720336] [2020-10-15 19:59:16,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:16,293 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:59:16,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:16,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:16,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:16,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:16,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:16,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927460774] [2020-10-15 19:59:16,533 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:16,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:16,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:16,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:16,533 INFO L87 Difference]: Start difference. First operand 268 states and 710 transitions. Second operand 17 states. [2020-10-15 19:59:17,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:17,430 INFO L93 Difference]: Finished difference Result 369 states and 917 transitions. [2020-10-15 19:59:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:59:17,432 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:17,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:17,433 INFO L225 Difference]: With dead ends: 369 [2020-10-15 19:59:17,433 INFO L226 Difference]: Without dead ends: 366 [2020-10-15 19:59:17,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=353, Invalid=907, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 19:59:17,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-15 19:59:17,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 271. [2020-10-15 19:59:17,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 19:59:17,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-15 19:59:17,438 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-15 19:59:17,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:17,438 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-15 19:59:17,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:17,438 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-15 19:59:17,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:17,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:17,439 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:17,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 200 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2020-10-15 19:59:17,640 INFO L429 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:17,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:17,640 INFO L82 PathProgramCache]: Analyzing trace with hash 95286048, now seen corresponding path program 179 times [2020-10-15 19:59:17,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:17,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313865924] [2020-10-15 19:59:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:17,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:17,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313865924] [2020-10-15 19:59:17,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221548280] [2020-10-15 19:59:17,787 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:17,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:59:17,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:17,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:17,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:18,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:18,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:18,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177758145] [2020-10-15 19:59:18,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:18,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:18,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:18,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:18,171 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-15 19:59:19,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:19,229 INFO L93 Difference]: Finished difference Result 425 states and 1047 transitions. [2020-10-15 19:59:19,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:59:19,230 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:19,231 INFO L225 Difference]: With dead ends: 425 [2020-10-15 19:59:19,231 INFO L226 Difference]: Without dead ends: 410 [2020-10-15 19:59:19,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=296, Invalid=760, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 19:59:19,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-15 19:59:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 276. [2020-10-15 19:59:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-15 19:59:19,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 733 transitions. [2020-10-15 19:59:19,242 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 733 transitions. Word has length 14 [2020-10-15 19:59:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:19,242 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 733 transitions. [2020-10-15 19:59:19,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 733 transitions. [2020-10-15 19:59:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:19,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:19,243 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:19,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,201 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:19,443 INFO L429 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:19,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:19,444 INFO L82 PathProgramCache]: Analyzing trace with hash 95314878, now seen corresponding path program 180 times [2020-10-15 19:59:19,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:19,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261231686] [2020-10-15 19:59:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:19,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:19,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261231686] [2020-10-15 19:59:19,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325514927] [2020-10-15 19:59:19,578 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:19,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:59:19,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:19,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:19,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:19,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:19,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:19,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:19,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984906786] [2020-10-15 19:59:19,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:19,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:19,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:19,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:19,863 INFO L87 Difference]: Start difference. First operand 276 states and 733 transitions. Second operand 17 states. [2020-10-15 19:59:20,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:20,616 INFO L93 Difference]: Finished difference Result 404 states and 1006 transitions. [2020-10-15 19:59:20,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 19:59:20,617 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:20,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:20,618 INFO L225 Difference]: With dead ends: 404 [2020-10-15 19:59:20,618 INFO L226 Difference]: Without dead ends: 399 [2020-10-15 19:59:20,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=274, Invalid=718, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:59:20,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-10-15 19:59:20,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 274. [2020-10-15 19:59:20,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 19:59:20,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 728 transitions. [2020-10-15 19:59:20,628 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 728 transitions. Word has length 14 [2020-10-15 19:59:20,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:20,628 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 728 transitions. [2020-10-15 19:59:20,628 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:20,628 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 728 transitions. [2020-10-15 19:59:20,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:20,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:20,629 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:20,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,202 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:20,830 INFO L429 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:20,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:20,830 INFO L82 PathProgramCache]: Analyzing trace with hash 115840877, now seen corresponding path program 181 times [2020-10-15 19:59:20,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:20,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785240957] [2020-10-15 19:59:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:20,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:20,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:20,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785240957] [2020-10-15 19:59:20,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292529464] [2020-10-15 19:59:20,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:21,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:21,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:21,241 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:21,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:21,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:21,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549577796] [2020-10-15 19:59:21,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:21,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:21,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:21,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:21,243 INFO L87 Difference]: Start difference. First operand 274 states and 728 transitions. Second operand 17 states. [2020-10-15 19:59:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:22,240 INFO L93 Difference]: Finished difference Result 369 states and 920 transitions. [2020-10-15 19:59:22,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:59:22,242 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:22,242 INFO L225 Difference]: With dead ends: 369 [2020-10-15 19:59:22,242 INFO L226 Difference]: Without dead ends: 366 [2020-10-15 19:59:22,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=395, Invalid=937, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 19:59:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-10-15 19:59:22,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 276. [2020-10-15 19:59:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-15 19:59:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 736 transitions. [2020-10-15 19:59:22,247 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 736 transitions. Word has length 14 [2020-10-15 19:59:22,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:22,247 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 736 transitions. [2020-10-15 19:59:22,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:22,248 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 736 transitions. [2020-10-15 19:59:22,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:22,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:22,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:22,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209,203 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:22,449 INFO L429 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:22,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:22,449 INFO L82 PathProgramCache]: Analyzing trace with hash 115841838, now seen corresponding path program 182 times [2020-10-15 19:59:22,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:22,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649052138] [2020-10-15 19:59:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:22,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649052138] [2020-10-15 19:59:22,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148517933] [2020-10-15 19:59:22,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:22,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:59:22,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:22,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:22,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:22,877 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:22,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:22,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:22,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626877784] [2020-10-15 19:59:22,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:22,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:22,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:22,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:22,879 INFO L87 Difference]: Start difference. First operand 276 states and 736 transitions. Second operand 17 states. [2020-10-15 19:59:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:23,892 INFO L93 Difference]: Finished difference Result 401 states and 999 transitions. [2020-10-15 19:59:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-15 19:59:23,893 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:23,894 INFO L225 Difference]: With dead ends: 401 [2020-10-15 19:59:23,894 INFO L226 Difference]: Without dead ends: 396 [2020-10-15 19:59:23,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 19:59:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-15 19:59:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 278. [2020-10-15 19:59:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-15 19:59:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 742 transitions. [2020-10-15 19:59:23,901 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 742 transitions. Word has length 14 [2020-10-15 19:59:23,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:23,901 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 742 transitions. [2020-10-15 19:59:23,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:23,901 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 742 transitions. [2020-10-15 19:59:23,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:23,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:23,902 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:24,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 204 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2020-10-15 19:59:24,106 INFO L429 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:24,106 INFO L82 PathProgramCache]: Analyzing trace with hash 116503967, now seen corresponding path program 183 times [2020-10-15 19:59:24,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:24,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197574635] [2020-10-15 19:59:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:24,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197574635] [2020-10-15 19:59:24,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120778035] [2020-10-15 19:59:24,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:24,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:59:24,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:24,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-15 19:59:24,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:24,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:24,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-10-15 19:59:24,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140418047] [2020-10-15 19:59:24,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 19:59:24,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:24,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 19:59:24,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-10-15 19:59:24,445 INFO L87 Difference]: Start difference. First operand 278 states and 742 transitions. Second operand 16 states. [2020-10-15 19:59:25,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:25,339 INFO L93 Difference]: Finished difference Result 360 states and 898 transitions. [2020-10-15 19:59:25,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:59:25,341 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 14 [2020-10-15 19:59:25,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:25,342 INFO L225 Difference]: With dead ends: 360 [2020-10-15 19:59:25,342 INFO L226 Difference]: Without dead ends: 357 [2020-10-15 19:59:25,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=282, Invalid=710, Unknown=0, NotChecked=0, Total=992 [2020-10-15 19:59:25,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-15 19:59:25,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 280. [2020-10-15 19:59:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-15 19:59:25,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 749 transitions. [2020-10-15 19:59:25,347 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 749 transitions. Word has length 14 [2020-10-15 19:59:25,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:25,347 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 749 transitions. [2020-10-15 19:59:25,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 19:59:25,347 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 749 transitions. [2020-10-15 19:59:25,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:25,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:25,347 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:25,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211,205 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:25,548 INFO L429 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:25,549 INFO L82 PathProgramCache]: Analyzing trace with hash 116525326, now seen corresponding path program 184 times [2020-10-15 19:59:25,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:25,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883115716] [2020-10-15 19:59:25,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:25,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883115716] [2020-10-15 19:59:25,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285989781] [2020-10-15 19:59:25,689 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:25,729 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:59:25,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:25,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:25,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:25,950 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:59:25,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:25,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:25,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:25,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9017743] [2020-10-15 19:59:25,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:25,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:25,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:25,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:25,969 INFO L87 Difference]: Start difference. First operand 280 states and 749 transitions. Second operand 17 states. [2020-10-15 19:59:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:26,848 INFO L93 Difference]: Finished difference Result 316 states and 812 transitions. [2020-10-15 19:59:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 19:59:26,849 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:26,850 INFO L225 Difference]: With dead ends: 316 [2020-10-15 19:59:26,850 INFO L226 Difference]: Without dead ends: 308 [2020-10-15 19:59:26,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=436, Invalid=896, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 19:59:26,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-15 19:59:26,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 280. [2020-10-15 19:59:26,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-15 19:59:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 745 transitions. [2020-10-15 19:59:26,855 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 745 transitions. Word has length 14 [2020-10-15 19:59:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:26,855 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 745 transitions. [2020-10-15 19:59:26,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 745 transitions. [2020-10-15 19:59:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:26,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:26,856 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:27,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 206 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2020-10-15 19:59:27,065 INFO L429 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:27,066 INFO L82 PathProgramCache]: Analyzing trace with hash 116526287, now seen corresponding path program 185 times [2020-10-15 19:59:27,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:27,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481656084] [2020-10-15 19:59:27,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:27,216 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:27,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481656084] [2020-10-15 19:59:27,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465687142] [2020-10-15 19:59:27,217 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:27,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:59:27,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:27,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:27,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:27,463 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:59:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:27,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:27,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:27,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546907548] [2020-10-15 19:59:27,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:27,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:27,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:27,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:27,526 INFO L87 Difference]: Start difference. First operand 280 states and 745 transitions. Second operand 17 states. [2020-10-15 19:59:28,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:28,825 INFO L93 Difference]: Finished difference Result 392 states and 995 transitions. [2020-10-15 19:59:28,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 19:59:28,826 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:28,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:28,827 INFO L225 Difference]: With dead ends: 392 [2020-10-15 19:59:28,827 INFO L226 Difference]: Without dead ends: 387 [2020-10-15 19:59:28,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=487, Invalid=1153, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 19:59:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2020-10-15 19:59:28,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 278. [2020-10-15 19:59:28,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-15 19:59:28,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 739 transitions. [2020-10-15 19:59:28,832 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 739 transitions. Word has length 14 [2020-10-15 19:59:28,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:28,833 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 739 transitions. [2020-10-15 19:59:28,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:28,833 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 739 transitions. [2020-10-15 19:59:28,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:28,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:28,833 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:29,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 207 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2020-10-15 19:59:29,034 INFO L429 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:29,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:29,035 INFO L82 PathProgramCache]: Analyzing trace with hash 116533758, now seen corresponding path program 186 times [2020-10-15 19:59:29,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:29,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785388302] [2020-10-15 19:59:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:29,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785388302] [2020-10-15 19:59:29,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177766699] [2020-10-15 19:59:29,172 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:29,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-15 19:59:29,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:29,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:29,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:29,465 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:29,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:29,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:29,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970377781] [2020-10-15 19:59:29,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:29,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:29,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:29,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:29,466 INFO L87 Difference]: Start difference. First operand 278 states and 739 transitions. Second operand 17 states. [2020-10-15 19:59:30,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:30,663 INFO L93 Difference]: Finished difference Result 409 states and 1032 transitions. [2020-10-15 19:59:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 19:59:30,665 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:30,665 INFO L225 Difference]: With dead ends: 409 [2020-10-15 19:59:30,665 INFO L226 Difference]: Without dead ends: 404 [2020-10-15 19:59:30,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=423, Invalid=1059, Unknown=0, NotChecked=0, Total=1482 [2020-10-15 19:59:30,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-15 19:59:30,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 282. [2020-10-15 19:59:30,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-15 19:59:30,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 753 transitions. [2020-10-15 19:59:30,671 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 753 transitions. Word has length 14 [2020-10-15 19:59:30,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:30,671 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 753 transitions. [2020-10-15 19:59:30,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 753 transitions. [2020-10-15 19:59:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:30,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:30,671 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:30,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,208 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:30,872 INFO L429 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:30,873 INFO L82 PathProgramCache]: Analyzing trace with hash 116555117, now seen corresponding path program 187 times [2020-10-15 19:59:30,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:30,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108444980] [2020-10-15 19:59:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:31,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108444980] [2020-10-15 19:59:31,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189044267] [2020-10-15 19:59:31,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:31,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:31,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:31,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:59:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:31,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:31,335 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:31,335 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245934011] [2020-10-15 19:59:31,336 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:31,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:31,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:31,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:31,336 INFO L87 Difference]: Start difference. First operand 282 states and 753 transitions. Second operand 17 states. [2020-10-15 19:59:32,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:32,737 INFO L93 Difference]: Finished difference Result 409 states and 1039 transitions. [2020-10-15 19:59:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 19:59:32,739 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:32,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:32,740 INFO L225 Difference]: With dead ends: 409 [2020-10-15 19:59:32,740 INFO L226 Difference]: Without dead ends: 404 [2020-10-15 19:59:32,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=481, Invalid=1079, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 19:59:32,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2020-10-15 19:59:32,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 282. [2020-10-15 19:59:32,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-15 19:59:32,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 753 transitions. [2020-10-15 19:59:32,745 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 753 transitions. Word has length 14 [2020-10-15 19:59:32,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:32,745 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 753 transitions. [2020-10-15 19:59:32,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:32,746 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 753 transitions. [2020-10-15 19:59:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:32,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:32,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:32,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 209 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2020-10-15 19:59:32,947 INFO L429 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:32,947 INFO L82 PathProgramCache]: Analyzing trace with hash 116556078, now seen corresponding path program 188 times [2020-10-15 19:59:32,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:32,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179218513] [2020-10-15 19:59:32,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:33,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:33,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179218513] [2020-10-15 19:59:33,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111733585] [2020-10-15 19:59:33,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:33,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:59:33,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:33,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:33,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:33,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:59:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:33,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:33,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:33,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143266549] [2020-10-15 19:59:33,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:33,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:33,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:33,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:33,392 INFO L87 Difference]: Start difference. First operand 282 states and 753 transitions. Second operand 17 states. [2020-10-15 19:59:35,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:35,018 INFO L93 Difference]: Finished difference Result 436 states and 1104 transitions. [2020-10-15 19:59:35,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 19:59:35,020 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:35,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:35,021 INFO L225 Difference]: With dead ends: 436 [2020-10-15 19:59:35,021 INFO L226 Difference]: Without dead ends: 426 [2020-10-15 19:59:35,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 19:59:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-10-15 19:59:35,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 275. [2020-10-15 19:59:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-15 19:59:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 734 transitions. [2020-10-15 19:59:35,026 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 734 transitions. Word has length 14 [2020-10-15 19:59:35,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:35,026 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 734 transitions. [2020-10-15 19:59:35,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:35,026 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 734 transitions. [2020-10-15 19:59:35,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:35,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:35,027 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:35,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 210 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2020-10-15 19:59:35,228 INFO L429 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:35,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:35,228 INFO L82 PathProgramCache]: Analyzing trace with hash 116764398, now seen corresponding path program 189 times [2020-10-15 19:59:35,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:35,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881325519] [2020-10-15 19:59:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:35,375 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:35,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881325519] [2020-10-15 19:59:35,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518386681] [2020-10-15 19:59:35,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:35,427 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:59:35,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:35,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:35,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:35,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:35,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:35,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450109384] [2020-10-15 19:59:35,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:35,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:35,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:35,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:35,790 INFO L87 Difference]: Start difference. First operand 275 states and 734 transitions. Second operand 17 states. [2020-10-15 19:59:36,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:36,768 INFO L93 Difference]: Finished difference Result 421 states and 1054 transitions. [2020-10-15 19:59:36,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 19:59:36,770 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:36,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:36,771 INFO L225 Difference]: With dead ends: 421 [2020-10-15 19:59:36,771 INFO L226 Difference]: Without dead ends: 407 [2020-10-15 19:59:36,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=314, Invalid=808, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 19:59:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-10-15 19:59:36,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 277. [2020-10-15 19:59:36,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-15 19:59:36,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 743 transitions. [2020-10-15 19:59:36,776 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 743 transitions. Word has length 14 [2020-10-15 19:59:36,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:36,777 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 743 transitions. [2020-10-15 19:59:36,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:36,777 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 743 transitions. [2020-10-15 19:59:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:36,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:36,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:36,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217,211 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:36,978 INFO L429 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:36,978 INFO L82 PathProgramCache]: Analyzing trace with hash 117427488, now seen corresponding path program 190 times [2020-10-15 19:59:36,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:36,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310864367] [2020-10-15 19:59:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:37,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:37,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310864367] [2020-10-15 19:59:37,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558583726] [2020-10-15 19:59:37,125 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:37,165 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:59:37,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:37,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:37,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:37,385 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:37,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:37,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:37,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517633282] [2020-10-15 19:59:37,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:37,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:37,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:37,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:37,387 INFO L87 Difference]: Start difference. First operand 277 states and 743 transitions. Second operand 17 states. [2020-10-15 19:59:38,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:38,463 INFO L93 Difference]: Finished difference Result 410 states and 1043 transitions. [2020-10-15 19:59:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:59:38,464 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:38,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:38,465 INFO L225 Difference]: With dead ends: 410 [2020-10-15 19:59:38,465 INFO L226 Difference]: Without dead ends: 405 [2020-10-15 19:59:38,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=396, Invalid=936, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 19:59:38,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2020-10-15 19:59:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 281. [2020-10-15 19:59:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-10-15 19:59:38,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 757 transitions. [2020-10-15 19:59:38,470 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 757 transitions. Word has length 14 [2020-10-15 19:59:38,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:38,470 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 757 transitions. [2020-10-15 19:59:38,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:38,470 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 757 transitions. [2020-10-15 19:59:38,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:38,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:38,471 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:38,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,212 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:38,672 INFO L429 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:38,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:38,672 INFO L82 PathProgramCache]: Analyzing trace with hash 117448847, now seen corresponding path program 191 times [2020-10-15 19:59:38,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:38,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849789969] [2020-10-15 19:59:38,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:38,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:38,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:38,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849789969] [2020-10-15 19:59:38,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637408414] [2020-10-15 19:59:38,814 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:38,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:59:38,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:38,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:38,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:39,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:59:39,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:39,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:39,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:39,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122776789] [2020-10-15 19:59:39,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:39,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:39,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:39,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:39,078 INFO L87 Difference]: Start difference. First operand 281 states and 757 transitions. Second operand 17 states. [2020-10-15 19:59:40,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:40,378 INFO L93 Difference]: Finished difference Result 431 states and 1100 transitions. [2020-10-15 19:59:40,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 19:59:40,380 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:40,380 INFO L225 Difference]: With dead ends: 431 [2020-10-15 19:59:40,380 INFO L226 Difference]: Without dead ends: 421 [2020-10-15 19:59:40,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=559, Invalid=1333, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 19:59:40,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-15 19:59:40,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 282. [2020-10-15 19:59:40,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-10-15 19:59:40,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 762 transitions. [2020-10-15 19:59:40,386 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 762 transitions. Word has length 14 [2020-10-15 19:59:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:40,386 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 762 transitions. [2020-10-15 19:59:40,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:40,386 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 762 transitions. [2020-10-15 19:59:40,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:40,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:40,387 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:40,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,213 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:40,588 INFO L429 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:40,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:40,588 INFO L82 PathProgramCache]: Analyzing trace with hash 117449808, now seen corresponding path program 192 times [2020-10-15 19:59:40,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:40,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882389564] [2020-10-15 19:59:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:40,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:40,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:40,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882389564] [2020-10-15 19:59:40,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073967969] [2020-10-15 19:59:40,746 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:40,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 19:59:40,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:40,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:40,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:40,989 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 19:59:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:41,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:41,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:41,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581893449] [2020-10-15 19:59:41,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:41,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:41,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:41,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:41,007 INFO L87 Difference]: Start difference. First operand 282 states and 762 transitions. Second operand 17 states. [2020-10-15 19:59:42,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:42,256 INFO L93 Difference]: Finished difference Result 457 states and 1163 transitions. [2020-10-15 19:59:42,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 19:59:42,258 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:42,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:42,258 INFO L225 Difference]: With dead ends: 457 [2020-10-15 19:59:42,258 INFO L226 Difference]: Without dead ends: 447 [2020-10-15 19:59:42,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=483, Invalid=1157, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 19:59:42,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2020-10-15 19:59:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 278. [2020-10-15 19:59:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-10-15 19:59:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 748 transitions. [2020-10-15 19:59:42,264 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 748 transitions. Word has length 14 [2020-10-15 19:59:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:42,264 INFO L481 AbstractCegarLoop]: Abstraction has 278 states and 748 transitions. [2020-10-15 19:59:42,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 748 transitions. [2020-10-15 19:59:42,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:42,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:42,264 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:42,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,214 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:42,465 INFO L429 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:42,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:42,466 INFO L82 PathProgramCache]: Analyzing trace with hash 117478638, now seen corresponding path program 193 times [2020-10-15 19:59:42,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:42,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983188172] [2020-10-15 19:59:42,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:42,609 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:42,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983188172] [2020-10-15 19:59:42,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666795863] [2020-10-15 19:59:42,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:42,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:42,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:42,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:59:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:42,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:42,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:42,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642186098] [2020-10-15 19:59:42,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:42,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:42,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:42,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:42,869 INFO L87 Difference]: Start difference. First operand 278 states and 748 transitions. Second operand 17 states. [2020-10-15 19:59:44,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:44,237 INFO L93 Difference]: Finished difference Result 441 states and 1123 transitions. [2020-10-15 19:59:44,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 19:59:44,238 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:44,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:44,239 INFO L225 Difference]: With dead ends: 441 [2020-10-15 19:59:44,239 INFO L226 Difference]: Without dead ends: 431 [2020-10-15 19:59:44,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 19:59:44,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2020-10-15 19:59:44,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 277. [2020-10-15 19:59:44,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-15 19:59:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 744 transitions. [2020-10-15 19:59:44,244 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 744 transitions. Word has length 14 [2020-10-15 19:59:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:44,245 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 744 transitions. [2020-10-15 19:59:44,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 744 transitions. [2020-10-15 19:59:44,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:44,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:44,245 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:44,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,215 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:44,446 INFO L429 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:44,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:44,446 INFO L82 PathProgramCache]: Analyzing trace with hash 144470028, now seen corresponding path program 194 times [2020-10-15 19:59:44,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:44,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537536909] [2020-10-15 19:59:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:44,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537536909] [2020-10-15 19:59:44,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794812794] [2020-10-15 19:59:44,579 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:44,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 19:59:44,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:44,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:44,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:44,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:44,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:44,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:44,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977975711] [2020-10-15 19:59:44,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:44,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:44,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:44,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:44,913 INFO L87 Difference]: Start difference. First operand 277 states and 744 transitions. Second operand 17 states. [2020-10-15 19:59:46,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:46,060 INFO L93 Difference]: Finished difference Result 401 states and 1008 transitions. [2020-10-15 19:59:46,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 19:59:46,061 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:46,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:46,062 INFO L225 Difference]: With dead ends: 401 [2020-10-15 19:59:46,062 INFO L226 Difference]: Without dead ends: 397 [2020-10-15 19:59:46,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=361, Invalid=899, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 19:59:46,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2020-10-15 19:59:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 276. [2020-10-15 19:59:46,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-10-15 19:59:46,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 741 transitions. [2020-10-15 19:59:46,068 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 741 transitions. Word has length 14 [2020-10-15 19:59:46,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:46,068 INFO L481 AbstractCegarLoop]: Abstraction has 276 states and 741 transitions. [2020-10-15 19:59:46,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:46,069 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 741 transitions. [2020-10-15 19:59:46,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:46,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:46,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:46,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 216 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2020-10-15 19:59:46,281 INFO L429 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:46,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:46,281 INFO L82 PathProgramCache]: Analyzing trace with hash 145133118, now seen corresponding path program 195 times [2020-10-15 19:59:46,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:46,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458070598] [2020-10-15 19:59:46,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:46,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:46,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458070598] [2020-10-15 19:59:46,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271065014] [2020-10-15 19:59:46,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:46,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 19:59:46,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:46,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 19:59:46,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:46,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:46,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:46,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:46,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252636975] [2020-10-15 19:59:46,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:46,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:46,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:46,756 INFO L87 Difference]: Start difference. First operand 276 states and 741 transitions. Second operand 17 states. [2020-10-15 19:59:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:48,140 INFO L93 Difference]: Finished difference Result 402 states and 1016 transitions. [2020-10-15 19:59:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 19:59:48,141 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:48,142 INFO L225 Difference]: With dead ends: 402 [2020-10-15 19:59:48,142 INFO L226 Difference]: Without dead ends: 398 [2020-10-15 19:59:48,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=448, Invalid=1112, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 19:59:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-15 19:59:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 277. [2020-10-15 19:59:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-10-15 19:59:48,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 743 transitions. [2020-10-15 19:59:48,148 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 743 transitions. Word has length 14 [2020-10-15 19:59:48,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:48,149 INFO L481 AbstractCegarLoop]: Abstraction has 277 states and 743 transitions. [2020-10-15 19:59:48,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 743 transitions. [2020-10-15 19:59:48,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:48,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:48,149 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:48,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 217 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2020-10-15 19:59:48,350 INFO L429 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:48,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:48,351 INFO L82 PathProgramCache]: Analyzing trace with hash 145155438, now seen corresponding path program 196 times [2020-10-15 19:59:48,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:48,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135558608] [2020-10-15 19:59:48,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:48,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:48,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:48,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135558608] [2020-10-15 19:59:48,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375540587] [2020-10-15 19:59:48,502 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:48,542 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 19:59:48,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:48,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:48,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:48,799 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:59:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:48,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:48,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 19:59:48,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497360189] [2020-10-15 19:59:48,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 19:59:48,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:48,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 19:59:48,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 19:59:48,836 INFO L87 Difference]: Start difference. First operand 277 states and 743 transitions. Second operand 17 states. [2020-10-15 19:59:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 19:59:50,800 INFO L93 Difference]: Finished difference Result 433 states and 1104 transitions. [2020-10-15 19:59:50,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 19:59:50,801 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 19:59:50,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 19:59:50,802 INFO L225 Difference]: With dead ends: 433 [2020-10-15 19:59:50,802 INFO L226 Difference]: Without dead ends: 427 [2020-10-15 19:59:50,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 19:59:50,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2020-10-15 19:59:50,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 275. [2020-10-15 19:59:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-10-15 19:59:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 736 transitions. [2020-10-15 19:59:50,807 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 736 transitions. Word has length 14 [2020-10-15 19:59:50,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 19:59:50,807 INFO L481 AbstractCegarLoop]: Abstraction has 275 states and 736 transitions. [2020-10-15 19:59:50,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 19:59:50,808 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 736 transitions. [2020-10-15 19:59:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 19:59:50,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 19:59:50,808 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 19:59:51,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 218 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2020-10-15 19:59:51,009 INFO L429 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 19:59:51,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 19:59:51,009 INFO L82 PathProgramCache]: Analyzing trace with hash 145184268, now seen corresponding path program 197 times [2020-10-15 19:59:51,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 19:59:51,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703818259] [2020-10-15 19:59:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 19:59:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 19:59:51,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:51,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703818259] [2020-10-15 19:59:51,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813212050] [2020-10-15 19:59:51,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 19:59:51,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 19:59:51,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 19:59:51,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 19:59:51,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 19:59:55,573 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 19:59:59,693 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 42 DAG size of output: 19 [2020-10-15 19:59:59,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 19:59:59,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 19:59:59,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-15 19:59:59,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905417133] [2020-10-15 19:59:59,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 19:59:59,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 19:59:59,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 19:59:59,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=220, Unknown=3, NotChecked=0, Total=306 [2020-10-15 19:59:59,696 INFO L87 Difference]: Start difference. First operand 275 states and 736 transitions. Second operand 18 states. [2020-10-15 20:00:03,915 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-10-15 20:00:08,532 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-15 20:00:08,811 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 23 [2020-10-15 20:00:15,237 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2020-10-15 20:00:17,498 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-15 20:00:36,497 WARN L193 SmtUtils]: Spent 4.16 s on a formula simplification. DAG size of input: 47 DAG size of output: 29 [2020-10-15 20:00:40,950 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-10-15 20:01:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:15,689 INFO L93 Difference]: Finished difference Result 470 states and 1171 transitions. [2020-10-15 20:01:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 20:01:15,691 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-15 20:01:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:15,692 INFO L225 Difference]: With dead ends: 470 [2020-10-15 20:01:15,692 INFO L226 Difference]: Without dead ends: 464 [2020-10-15 20:01:15,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 55.6s TimeCoverageRelationStatistics Valid=559, Invalid=1408, Unknown=13, NotChecked=0, Total=1980 [2020-10-15 20:01:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-10-15 20:01:15,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 273. [2020-10-15 20:01:15,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-15 20:01:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 726 transitions. [2020-10-15 20:01:15,697 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 726 transitions. Word has length 14 [2020-10-15 20:01:15,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:15,697 INFO L481 AbstractCegarLoop]: Abstraction has 273 states and 726 transitions. [2020-10-15 20:01:15,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 20:01:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 726 transitions. [2020-10-15 20:01:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:15,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:15,698 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:15,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 219 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable225 [2020-10-15 20:01:15,899 INFO L429 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:15,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:15,899 INFO L82 PathProgramCache]: Analyzing trace with hash 146086430, now seen corresponding path program 198 times [2020-10-15 20:01:15,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:15,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963092337] [2020-10-15 20:01:15,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:16,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963092337] [2020-10-15 20:01:16,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516232609] [2020-10-15 20:01:16,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:16,091 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:01:16,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:16,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:16,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:16,354 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:16,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:16,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:16,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6216033] [2020-10-15 20:01:16,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:16,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:16,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:16,356 INFO L87 Difference]: Start difference. First operand 273 states and 726 transitions. Second operand 17 states. [2020-10-15 20:01:16,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:16,879 INFO L93 Difference]: Finished difference Result 351 states and 887 transitions. [2020-10-15 20:01:16,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 20:01:16,880 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:16,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:16,881 INFO L225 Difference]: With dead ends: 351 [2020-10-15 20:01:16,881 INFO L226 Difference]: Without dead ends: 338 [2020-10-15 20:01:16,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2020-10-15 20:01:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-15 20:01:16,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 274. [2020-10-15 20:01:16,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 20:01:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 727 transitions. [2020-10-15 20:01:16,886 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 727 transitions. Word has length 14 [2020-10-15 20:01:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:16,886 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 727 transitions. [2020-10-15 20:01:16,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:16,886 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 727 transitions. [2020-10-15 20:01:16,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:16,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:16,887 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:17,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 220 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2020-10-15 20:01:17,088 INFO L429 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:17,089 INFO L82 PathProgramCache]: Analyzing trace with hash 146108750, now seen corresponding path program 199 times [2020-10-15 20:01:17,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:17,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792364149] [2020-10-15 20:01:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:17,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792364149] [2020-10-15 20:01:17,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589569317] [2020-10-15 20:01:17,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:17,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:17,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:17,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:17,511 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:01:17,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:17,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:17,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:17,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017978330] [2020-10-15 20:01:17,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:17,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:17,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:17,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:17,538 INFO L87 Difference]: Start difference. First operand 274 states and 727 transitions. Second operand 17 states. [2020-10-15 20:01:18,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:18,180 INFO L93 Difference]: Finished difference Result 354 states and 891 transitions. [2020-10-15 20:01:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:01:18,182 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:18,182 INFO L225 Difference]: With dead ends: 354 [2020-10-15 20:01:18,183 INFO L226 Difference]: Without dead ends: 330 [2020-10-15 20:01:18,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:01:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-15 20:01:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 267. [2020-10-15 20:01:18,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-15 20:01:18,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 713 transitions. [2020-10-15 20:01:18,186 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 713 transitions. Word has length 14 [2020-10-15 20:01:18,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:18,186 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 713 transitions. [2020-10-15 20:01:18,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:18,187 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 713 transitions. [2020-10-15 20:01:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:18,187 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:18,187 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:18,387 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227,221 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:18,388 INFO L429 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:18,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:18,388 INFO L82 PathProgramCache]: Analyzing trace with hash 2034084541, now seen corresponding path program 200 times [2020-10-15 20:01:18,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:18,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425010671] [2020-10-15 20:01:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:18,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425010671] [2020-10-15 20:01:18,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500470616] [2020-10-15 20:01:18,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:18,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:01:18,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:18,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:18,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:18,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:18,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:18,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978094923] [2020-10-15 20:01:18,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:18,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:18,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:18,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:18,843 INFO L87 Difference]: Start difference. First operand 267 states and 713 transitions. Second operand 17 states. [2020-10-15 20:01:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:19,324 INFO L93 Difference]: Finished difference Result 347 states and 876 transitions. [2020-10-15 20:01:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:01:19,326 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:19,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:19,327 INFO L225 Difference]: With dead ends: 347 [2020-10-15 20:01:19,327 INFO L226 Difference]: Without dead ends: 344 [2020-10-15 20:01:19,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-15 20:01:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-10-15 20:01:19,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 270. [2020-10-15 20:01:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 20:01:19,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 722 transitions. [2020-10-15 20:01:19,332 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 722 transitions. Word has length 14 [2020-10-15 20:01:19,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:19,332 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 722 transitions. [2020-10-15 20:01:19,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:19,332 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 722 transitions. [2020-10-15 20:01:19,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:19,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:19,333 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:19,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 222 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable228 [2020-10-15 20:01:19,533 INFO L429 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:19,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 2034085502, now seen corresponding path program 201 times [2020-10-15 20:01:19,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:19,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621119053] [2020-10-15 20:01:19,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:19,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621119053] [2020-10-15 20:01:19,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504278227] [2020-10-15 20:01:19,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:19,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:01:19,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:19,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:19,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:20,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:20,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:20,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036567615] [2020-10-15 20:01:20,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:20,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:20,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:20,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:20,012 INFO L87 Difference]: Start difference. First operand 270 states and 722 transitions. Second operand 17 states. [2020-10-15 20:01:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:20,580 INFO L93 Difference]: Finished difference Result 367 states and 918 transitions. [2020-10-15 20:01:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:01:20,582 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:20,582 INFO L225 Difference]: With dead ends: 367 [2020-10-15 20:01:20,582 INFO L226 Difference]: Without dead ends: 363 [2020-10-15 20:01:20,583 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2020-10-15 20:01:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-15 20:01:20,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 269. [2020-10-15 20:01:20,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 20:01:20,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 719 transitions. [2020-10-15 20:01:20,587 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 719 transitions. Word has length 14 [2020-10-15 20:01:20,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:20,587 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 719 transitions. [2020-10-15 20:01:20,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:20,587 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 719 transitions. [2020-10-15 20:01:20,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:20,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:20,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:20,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,223 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:20,789 INFO L429 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:20,789 INFO L82 PathProgramCache]: Analyzing trace with hash 2034114332, now seen corresponding path program 202 times [2020-10-15 20:01:20,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:20,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970411463] [2020-10-15 20:01:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:20,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:20,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970411463] [2020-10-15 20:01:20,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579476948] [2020-10-15 20:01:20,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:20,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:01:21,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:21,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:21,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:22,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:22,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:22,726 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141267714] [2020-10-15 20:01:22,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:22,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:22,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:22,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:22,727 INFO L87 Difference]: Start difference. First operand 269 states and 719 transitions. Second operand 17 states. [2020-10-15 20:01:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:23,589 INFO L93 Difference]: Finished difference Result 391 states and 972 transitions. [2020-10-15 20:01:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 20:01:23,591 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:23,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:23,592 INFO L225 Difference]: With dead ends: 391 [2020-10-15 20:01:23,592 INFO L226 Difference]: Without dead ends: 386 [2020-10-15 20:01:23,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=254, Invalid=558, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:01:23,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2020-10-15 20:01:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 274. [2020-10-15 20:01:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 20:01:23,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 732 transitions. [2020-10-15 20:01:23,604 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 732 transitions. Word has length 14 [2020-10-15 20:01:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:23,604 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 732 transitions. [2020-10-15 20:01:23,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:23,604 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 732 transitions. [2020-10-15 20:01:23,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:23,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:23,605 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:23,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230,224 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:23,806 INFO L429 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:23,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:23,806 INFO L82 PathProgramCache]: Analyzing trace with hash 2035009023, now seen corresponding path program 203 times [2020-10-15 20:01:23,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:23,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14225675] [2020-10-15 20:01:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:24,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14225675] [2020-10-15 20:01:24,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890493448] [2020-10-15 20:01:24,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:24,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:01:24,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:24,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:24,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:24,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:24,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:24,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:24,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068390434] [2020-10-15 20:01:24,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:24,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:24,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:24,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:24,322 INFO L87 Difference]: Start difference. First operand 274 states and 732 transitions. Second operand 17 states. [2020-10-15 20:01:24,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:24,889 INFO L93 Difference]: Finished difference Result 391 states and 967 transitions. [2020-10-15 20:01:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 20:01:24,891 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:24,892 INFO L225 Difference]: With dead ends: 391 [2020-10-15 20:01:24,892 INFO L226 Difference]: Without dead ends: 373 [2020-10-15 20:01:24,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-15 20:01:24,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-15 20:01:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 274. [2020-10-15 20:01:24,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-15 20:01:24,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 728 transitions. [2020-10-15 20:01:24,896 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 728 transitions. Word has length 14 [2020-10-15 20:01:24,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:24,896 INFO L481 AbstractCegarLoop]: Abstraction has 274 states and 728 transitions. [2020-10-15 20:01:24,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:24,896 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 728 transitions. [2020-10-15 20:01:24,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:24,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:24,896 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:25,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,225 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:25,097 INFO L429 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:25,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:25,098 INFO L82 PathProgramCache]: Analyzing trace with hash 2062713692, now seen corresponding path program 204 times [2020-10-15 20:01:25,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:25,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855770475] [2020-10-15 20:01:25,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:25,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:25,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855770475] [2020-10-15 20:01:25,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930481552] [2020-10-15 20:01:25,271 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:25,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:01:25,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:25,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:25,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:25,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:25,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:25,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956642521] [2020-10-15 20:01:25,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:25,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:25,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:25,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:25,620 INFO L87 Difference]: Start difference. First operand 274 states and 728 transitions. Second operand 17 states. [2020-10-15 20:01:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:26,335 INFO L93 Difference]: Finished difference Result 362 states and 910 transitions. [2020-10-15 20:01:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:01:26,337 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:26,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:26,338 INFO L225 Difference]: With dead ends: 362 [2020-10-15 20:01:26,338 INFO L226 Difference]: Without dead ends: 357 [2020-10-15 20:01:26,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600 [2020-10-15 20:01:26,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-15 20:01:26,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 271. [2020-10-15 20:01:26,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 20:01:26,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 721 transitions. [2020-10-15 20:01:26,344 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 721 transitions. Word has length 14 [2020-10-15 20:01:26,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:26,344 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 721 transitions. [2020-10-15 20:01:26,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:26,344 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 721 transitions. [2020-10-15 20:01:26,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:26,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:26,345 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:26,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 226 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2020-10-15 20:01:26,546 INFO L429 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:26,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:26,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2063667004, now seen corresponding path program 205 times [2020-10-15 20:01:26,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:26,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570825271] [2020-10-15 20:01:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:26,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:26,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570825271] [2020-10-15 20:01:26,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579884373] [2020-10-15 20:01:26,824 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:26,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:26,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:27,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:27,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:27,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048977380] [2020-10-15 20:01:27,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:27,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:27,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:27,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:27,203 INFO L87 Difference]: Start difference. First operand 271 states and 721 transitions. Second operand 17 states. [2020-10-15 20:01:27,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:27,646 INFO L93 Difference]: Finished difference Result 339 states and 853 transitions. [2020-10-15 20:01:27,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 20:01:27,648 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:27,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:27,649 INFO L225 Difference]: With dead ends: 339 [2020-10-15 20:01:27,649 INFO L226 Difference]: Without dead ends: 326 [2020-10-15 20:01:27,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-10-15 20:01:27,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-15 20:01:27,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 265. [2020-10-15 20:01:27,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-15 20:01:27,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 709 transitions. [2020-10-15 20:01:27,654 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 709 transitions. Word has length 14 [2020-10-15 20:01:27,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:27,654 INFO L481 AbstractCegarLoop]: Abstraction has 265 states and 709 transitions. [2020-10-15 20:01:27,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:27,654 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 709 transitions. [2020-10-15 20:01:27,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:27,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:27,654 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:27,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 227 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2020-10-15 20:01:27,857 INFO L429 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:27,857 INFO L82 PathProgramCache]: Analyzing trace with hash 313362251, now seen corresponding path program 206 times [2020-10-15 20:01:27,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:27,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425324373] [2020-10-15 20:01:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:28,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:28,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425324373] [2020-10-15 20:01:28,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707194852] [2020-10-15 20:01:28,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:28,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:01:28,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:28,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:28,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:28,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:28,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:28,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270889241] [2020-10-15 20:01:28,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:28,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:28,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:28,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:28,438 INFO L87 Difference]: Start difference. First operand 265 states and 709 transitions. Second operand 17 states. [2020-10-15 20:01:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:29,070 INFO L93 Difference]: Finished difference Result 346 states and 872 transitions. [2020-10-15 20:01:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:01:29,072 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:29,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:29,073 INFO L225 Difference]: With dead ends: 346 [2020-10-15 20:01:29,073 INFO L226 Difference]: Without dead ends: 343 [2020-10-15 20:01:29,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2020-10-15 20:01:29,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-15 20:01:29,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 267. [2020-10-15 20:01:29,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-15 20:01:29,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 715 transitions. [2020-10-15 20:01:29,078 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 715 transitions. Word has length 14 [2020-10-15 20:01:29,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:29,079 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 715 transitions. [2020-10-15 20:01:29,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:29,079 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 715 transitions. [2020-10-15 20:01:29,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:29,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:29,079 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:29,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 228 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable234 [2020-10-15 20:01:29,280 INFO L429 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:29,281 INFO L82 PathProgramCache]: Analyzing trace with hash 313363212, now seen corresponding path program 207 times [2020-10-15 20:01:29,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:29,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307716090] [2020-10-15 20:01:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:29,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307716090] [2020-10-15 20:01:29,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424854993] [2020-10-15 20:01:29,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:29,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:01:29,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:29,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:29,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:29,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:29,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:29,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:29,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428470303] [2020-10-15 20:01:29,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:29,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:29,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:29,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:29,872 INFO L87 Difference]: Start difference. First operand 267 states and 715 transitions. Second operand 17 states. [2020-10-15 20:01:30,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:30,589 INFO L93 Difference]: Finished difference Result 361 states and 905 transitions. [2020-10-15 20:01:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:01:30,591 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:30,591 INFO L225 Difference]: With dead ends: 361 [2020-10-15 20:01:30,592 INFO L226 Difference]: Without dead ends: 357 [2020-10-15 20:01:30,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=476, Unknown=0, NotChecked=0, Total=650 [2020-10-15 20:01:30,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2020-10-15 20:01:30,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 266. [2020-10-15 20:01:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-15 20:01:30,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 712 transitions. [2020-10-15 20:01:30,597 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 712 transitions. Word has length 14 [2020-10-15 20:01:30,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:30,597 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 712 transitions. [2020-10-15 20:01:30,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 712 transitions. [2020-10-15 20:01:30,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:30,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:30,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:30,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 229 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2020-10-15 20:01:30,798 INFO L429 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:30,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:30,799 INFO L82 PathProgramCache]: Analyzing trace with hash 313392042, now seen corresponding path program 208 times [2020-10-15 20:01:30,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:30,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775980402] [2020-10-15 20:01:30,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:30,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:30,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775980402] [2020-10-15 20:01:30,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601373013] [2020-10-15 20:01:30,984 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:31,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:01:31,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:31,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:31,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:33,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:33,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:33,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:33,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982927205] [2020-10-15 20:01:33,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:33,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:33,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:33,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:33,219 INFO L87 Difference]: Start difference. First operand 266 states and 712 transitions. Second operand 17 states. [2020-10-15 20:01:34,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:34,177 INFO L93 Difference]: Finished difference Result 401 states and 990 transitions. [2020-10-15 20:01:34,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 20:01:34,178 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:34,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:34,179 INFO L225 Difference]: With dead ends: 401 [2020-10-15 20:01:34,179 INFO L226 Difference]: Without dead ends: 388 [2020-10-15 20:01:34,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-15 20:01:34,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2020-10-15 20:01:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 271. [2020-10-15 20:01:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 20:01:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 725 transitions. [2020-10-15 20:01:34,183 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 725 transitions. Word has length 14 [2020-10-15 20:01:34,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:34,183 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 725 transitions. [2020-10-15 20:01:34,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:34,183 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 725 transitions. [2020-10-15 20:01:34,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:34,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:34,184 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:34,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 230 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2020-10-15 20:01:34,385 INFO L429 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:34,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:34,385 INFO L82 PathProgramCache]: Analyzing trace with hash 314286733, now seen corresponding path program 209 times [2020-10-15 20:01:34,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:34,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566603300] [2020-10-15 20:01:34,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:34,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:34,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566603300] [2020-10-15 20:01:34,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390831409] [2020-10-15 20:01:34,519 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:34,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:01:34,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:34,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:34,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:34,792 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:34,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:34,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:34,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684642376] [2020-10-15 20:01:34,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:34,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:34,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:34,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:34,794 INFO L87 Difference]: Start difference. First operand 271 states and 725 transitions. Second operand 17 states. [2020-10-15 20:01:35,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:35,403 INFO L93 Difference]: Finished difference Result 381 states and 946 transitions. [2020-10-15 20:01:35,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 20:01:35,405 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:35,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:35,406 INFO L225 Difference]: With dead ends: 381 [2020-10-15 20:01:35,406 INFO L226 Difference]: Without dead ends: 363 [2020-10-15 20:01:35,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:01:35,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-15 20:01:35,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 270. [2020-10-15 20:01:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 20:01:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 719 transitions. [2020-10-15 20:01:35,410 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 719 transitions. Word has length 14 [2020-10-15 20:01:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:35,410 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 719 transitions. [2020-10-15 20:01:35,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 719 transitions. [2020-10-15 20:01:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:35,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:35,411 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:35,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 231 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable237 [2020-10-15 20:01:35,611 INFO L429 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:35,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:35,612 INFO L82 PathProgramCache]: Analyzing trace with hash 950591741, now seen corresponding path program 210 times [2020-10-15 20:01:35,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:35,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737544207] [2020-10-15 20:01:35,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:35,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:35,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:35,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737544207] [2020-10-15 20:01:35,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492949376] [2020-10-15 20:01:35,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:35,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-15 20:01:35,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:35,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:35,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:36,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:36,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:36,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:36,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729992705] [2020-10-15 20:01:36,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:36,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:36,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:36,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:36,038 INFO L87 Difference]: Start difference. First operand 270 states and 719 transitions. Second operand 17 states. [2020-10-15 20:01:36,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:36,684 INFO L93 Difference]: Finished difference Result 354 states and 884 transitions. [2020-10-15 20:01:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 20:01:36,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:36,687 INFO L225 Difference]: With dead ends: 354 [2020-10-15 20:01:36,687 INFO L226 Difference]: Without dead ends: 351 [2020-10-15 20:01:36,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-15 20:01:36,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-10-15 20:01:36,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 271. [2020-10-15 20:01:36,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 20:01:36,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 722 transitions. [2020-10-15 20:01:36,692 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 722 transitions. Word has length 14 [2020-10-15 20:01:36,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:36,692 INFO L481 AbstractCegarLoop]: Abstraction has 271 states and 722 transitions. [2020-10-15 20:01:36,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:36,692 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 722 transitions. [2020-10-15 20:01:36,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:36,692 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:36,692 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:36,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 232 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable238 [2020-10-15 20:01:36,893 INFO L429 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:36,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:36,894 INFO L82 PathProgramCache]: Analyzing trace with hash 950592702, now seen corresponding path program 211 times [2020-10-15 20:01:36,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:36,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895807047] [2020-10-15 20:01:36,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:37,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:37,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895807047] [2020-10-15 20:01:37,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730467867] [2020-10-15 20:01:37,032 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:37,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:37,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:37,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:37,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:37,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:37,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540045841] [2020-10-15 20:01:37,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:37,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:37,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:37,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:37,342 INFO L87 Difference]: Start difference. First operand 271 states and 722 transitions. Second operand 17 states. [2020-10-15 20:01:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:37,985 INFO L93 Difference]: Finished difference Result 359 states and 897 transitions. [2020-10-15 20:01:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 20:01:37,987 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:37,987 INFO L225 Difference]: With dead ends: 359 [2020-10-15 20:01:37,987 INFO L226 Difference]: Without dead ends: 355 [2020-10-15 20:01:37,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=592, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:01:37,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-10-15 20:01:37,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 270. [2020-10-15 20:01:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 20:01:37,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 719 transitions. [2020-10-15 20:01:37,992 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 719 transitions. Word has length 14 [2020-10-15 20:01:37,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:37,993 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 719 transitions. [2020-10-15 20:01:37,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:37,993 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 719 transitions. [2020-10-15 20:01:37,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:37,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:37,993 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:38,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 233 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2020-10-15 20:01:38,194 INFO L429 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:38,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:38,194 INFO L82 PathProgramCache]: Analyzing trace with hash 950621532, now seen corresponding path program 212 times [2020-10-15 20:01:38,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:38,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918865359] [2020-10-15 20:01:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:38,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918865359] [2020-10-15 20:01:38,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580529951] [2020-10-15 20:01:38,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:38,371 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:01:38,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:38,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:38,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:40,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:40,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:40,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750113072] [2020-10-15 20:01:40,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:40,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:40,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:40,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:40,166 INFO L87 Difference]: Start difference. First operand 270 states and 719 transitions. Second operand 17 states. [2020-10-15 20:01:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:41,163 INFO L93 Difference]: Finished difference Result 386 states and 956 transitions. [2020-10-15 20:01:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 20:01:41,165 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:41,165 INFO L225 Difference]: With dead ends: 386 [2020-10-15 20:01:41,165 INFO L226 Difference]: Without dead ends: 381 [2020-10-15 20:01:41,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 20:01:41,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-15 20:01:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 269. [2020-10-15 20:01:41,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 20:01:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 715 transitions. [2020-10-15 20:01:41,170 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 715 transitions. Word has length 14 [2020-10-15 20:01:41,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:41,171 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 715 transitions. [2020-10-15 20:01:41,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:41,171 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 715 transitions. [2020-10-15 20:01:41,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:41,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:41,171 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:41,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,234 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:41,372 INFO L429 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:41,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:41,372 INFO L82 PathProgramCache]: Analyzing trace with hash 971147531, now seen corresponding path program 213 times [2020-10-15 20:01:41,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:41,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259575995] [2020-10-15 20:01:41,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:41,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:41,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259575995] [2020-10-15 20:01:41,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775123369] [2020-10-15 20:01:41,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:41,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 20:01:41,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:41,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:41,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:41,833 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:41,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:41,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:41,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315370142] [2020-10-15 20:01:41,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:41,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:41,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:41,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:41,835 INFO L87 Difference]: Start difference. First operand 269 states and 715 transitions. Second operand 17 states. [2020-10-15 20:01:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:42,655 INFO L93 Difference]: Finished difference Result 348 states and 872 transitions. [2020-10-15 20:01:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 20:01:42,657 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:42,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:42,658 INFO L225 Difference]: With dead ends: 348 [2020-10-15 20:01:42,658 INFO L226 Difference]: Without dead ends: 345 [2020-10-15 20:01:42,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=303, Invalid=753, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 20:01:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-15 20:01:42,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 269. [2020-10-15 20:01:42,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 20:01:42,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 715 transitions. [2020-10-15 20:01:42,662 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 715 transitions. Word has length 14 [2020-10-15 20:01:42,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:42,662 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 715 transitions. [2020-10-15 20:01:42,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:42,662 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 715 transitions. [2020-10-15 20:01:42,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:42,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:42,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:42,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,235 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:42,863 INFO L429 AbstractCegarLoop]: === Iteration 243 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:42,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:42,864 INFO L82 PathProgramCache]: Analyzing trace with hash 971148492, now seen corresponding path program 214 times [2020-10-15 20:01:42,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:42,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303800737] [2020-10-15 20:01:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:43,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303800737] [2020-10-15 20:01:43,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094369549] [2020-10-15 20:01:43,008 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:43,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:01:43,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:43,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:43,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:43,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:43,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:43,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055209181] [2020-10-15 20:01:43,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:43,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:43,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:43,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:43,323 INFO L87 Difference]: Start difference. First operand 269 states and 715 transitions. Second operand 17 states. [2020-10-15 20:01:44,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:44,134 INFO L93 Difference]: Finished difference Result 350 states and 873 transitions. [2020-10-15 20:01:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 20:01:44,136 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:44,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:44,137 INFO L225 Difference]: With dead ends: 350 [2020-10-15 20:01:44,137 INFO L226 Difference]: Without dead ends: 346 [2020-10-15 20:01:44,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-15 20:01:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2020-10-15 20:01:44,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 269. [2020-10-15 20:01:44,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 20:01:44,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 714 transitions. [2020-10-15 20:01:44,148 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 714 transitions. Word has length 14 [2020-10-15 20:01:44,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:44,148 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 714 transitions. [2020-10-15 20:01:44,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:44,148 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 714 transitions. [2020-10-15 20:01:44,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:44,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:44,149 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:44,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,236 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:44,360 INFO L429 AbstractCegarLoop]: === Iteration 244 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:44,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:44,361 INFO L82 PathProgramCache]: Analyzing trace with hash 971810621, now seen corresponding path program 215 times [2020-10-15 20:01:44,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:44,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942728053] [2020-10-15 20:01:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:44,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942728053] [2020-10-15 20:01:44,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899348337] [2020-10-15 20:01:44,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:44,549 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 20:01:44,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:44,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:44,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:44,805 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:44,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:44,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:44,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910010039] [2020-10-15 20:01:44,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:44,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:44,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:44,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:44,807 INFO L87 Difference]: Start difference. First operand 269 states and 714 transitions. Second operand 17 states. [2020-10-15 20:01:45,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:45,726 INFO L93 Difference]: Finished difference Result 334 states and 840 transitions. [2020-10-15 20:01:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 20:01:45,728 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:45,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:45,728 INFO L225 Difference]: With dead ends: 334 [2020-10-15 20:01:45,728 INFO L226 Difference]: Without dead ends: 331 [2020-10-15 20:01:45,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=324, Invalid=798, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 20:01:45,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-15 20:01:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 269. [2020-10-15 20:01:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-15 20:01:45,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 713 transitions. [2020-10-15 20:01:45,733 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 713 transitions. Word has length 14 [2020-10-15 20:01:45,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:45,733 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 713 transitions. [2020-10-15 20:01:45,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:45,733 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 713 transitions. [2020-10-15 20:01:45,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:45,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:45,734 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:45,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 237 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable243 [2020-10-15 20:01:45,934 INFO L429 AbstractCegarLoop]: === Iteration 245 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:45,935 INFO L82 PathProgramCache]: Analyzing trace with hash 971831980, now seen corresponding path program 216 times [2020-10-15 20:01:45,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396824462] [2020-10-15 20:01:45,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:46,081 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:46,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396824462] [2020-10-15 20:01:46,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291837836] [2020-10-15 20:01:46,082 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:46,127 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:01:46,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:46,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:46,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:46,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:01:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:46,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:46,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:46,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933624238] [2020-10-15 20:01:46,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:46,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:46,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:46,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:46,351 INFO L87 Difference]: Start difference. First operand 269 states and 713 transitions. Second operand 17 states. [2020-10-15 20:01:46,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:46,928 INFO L93 Difference]: Finished difference Result 284 states and 731 transitions. [2020-10-15 20:01:46,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 20:01:46,929 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:46,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:46,930 INFO L225 Difference]: With dead ends: 284 [2020-10-15 20:01:46,930 INFO L226 Difference]: Without dead ends: 274 [2020-10-15 20:01:46,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=258, Invalid=554, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:01:46,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-10-15 20:01:46,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 261. [2020-10-15 20:01:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-15 20:01:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 686 transitions. [2020-10-15 20:01:46,934 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 686 transitions. Word has length 14 [2020-10-15 20:01:46,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:46,934 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 686 transitions. [2020-10-15 20:01:46,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 686 transitions. [2020-10-15 20:01:46,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:46,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:46,935 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:47,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244,238 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:47,136 INFO L429 AbstractCegarLoop]: === Iteration 246 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:47,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:47,136 INFO L82 PathProgramCache]: Analyzing trace with hash 971832941, now seen corresponding path program 217 times [2020-10-15 20:01:47,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:47,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044367183] [2020-10-15 20:01:47,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:47,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:47,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044367183] [2020-10-15 20:01:47,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059242980] [2020-10-15 20:01:47,292 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:47,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:47,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:47,555 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:01:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:47,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:47,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:47,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319616675] [2020-10-15 20:01:47,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:47,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:47,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:47,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:47,616 INFO L87 Difference]: Start difference. First operand 261 states and 686 transitions. Second operand 17 states. [2020-10-15 20:01:48,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:48,831 INFO L93 Difference]: Finished difference Result 365 states and 917 transitions. [2020-10-15 20:01:48,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 20:01:48,833 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:48,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:48,833 INFO L225 Difference]: With dead ends: 365 [2020-10-15 20:01:48,834 INFO L226 Difference]: Without dead ends: 360 [2020-10-15 20:01:48,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 20:01:48,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-15 20:01:48,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 259. [2020-10-15 20:01:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2020-10-15 20:01:48,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 680 transitions. [2020-10-15 20:01:48,838 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 680 transitions. Word has length 14 [2020-10-15 20:01:48,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:48,838 INFO L481 AbstractCegarLoop]: Abstraction has 259 states and 680 transitions. [2020-10-15 20:01:48,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:48,838 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 680 transitions. [2020-10-15 20:01:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:48,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:48,838 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:49,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 239 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2020-10-15 20:01:49,039 INFO L429 AbstractCegarLoop]: === Iteration 247 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash 971840412, now seen corresponding path program 218 times [2020-10-15 20:01:49,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:49,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039046170] [2020-10-15 20:01:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:49,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039046170] [2020-10-15 20:01:49,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029087854] [2020-10-15 20:01:49,189 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:49,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:01:49,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:49,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:49,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:49,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:49,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:49,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500714553] [2020-10-15 20:01:49,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:49,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:49,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:49,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:49,550 INFO L87 Difference]: Start difference. First operand 259 states and 680 transitions. Second operand 17 states. [2020-10-15 20:01:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:50,550 INFO L93 Difference]: Finished difference Result 357 states and 889 transitions. [2020-10-15 20:01:50,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 20:01:50,552 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:50,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:50,553 INFO L225 Difference]: With dead ends: 357 [2020-10-15 20:01:50,553 INFO L226 Difference]: Without dead ends: 353 [2020-10-15 20:01:50,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=335, Invalid=855, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 20:01:50,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2020-10-15 20:01:50,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 261. [2020-10-15 20:01:50,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-15 20:01:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 687 transitions. [2020-10-15 20:01:50,558 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 687 transitions. Word has length 14 [2020-10-15 20:01:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:50,558 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 687 transitions. [2020-10-15 20:01:50,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:50,558 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 687 transitions. [2020-10-15 20:01:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:50,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:50,558 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:50,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 240 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2020-10-15 20:01:50,759 INFO L429 AbstractCegarLoop]: === Iteration 248 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:50,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:50,760 INFO L82 PathProgramCache]: Analyzing trace with hash 971861771, now seen corresponding path program 219 times [2020-10-15 20:01:50,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:50,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564993459] [2020-10-15 20:01:50,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:50,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:50,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564993459] [2020-10-15 20:01:50,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295300234] [2020-10-15 20:01:50,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:50,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:01:50,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:50,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:50,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:51,198 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:01:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:51,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:51,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:51,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75724609] [2020-10-15 20:01:51,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:51,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:51,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:51,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:51,259 INFO L87 Difference]: Start difference. First operand 261 states and 687 transitions. Second operand 17 states. [2020-10-15 20:01:52,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:52,714 INFO L93 Difference]: Finished difference Result 385 states and 962 transitions. [2020-10-15 20:01:52,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 20:01:52,715 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:52,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:52,716 INFO L225 Difference]: With dead ends: 385 [2020-10-15 20:01:52,716 INFO L226 Difference]: Without dead ends: 380 [2020-10-15 20:01:52,716 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=419, Invalid=987, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 20:01:52,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-15 20:01:52,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 261. [2020-10-15 20:01:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-15 20:01:52,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 687 transitions. [2020-10-15 20:01:52,721 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 687 transitions. Word has length 14 [2020-10-15 20:01:52,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:52,721 INFO L481 AbstractCegarLoop]: Abstraction has 261 states and 687 transitions. [2020-10-15 20:01:52,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:52,721 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 687 transitions. [2020-10-15 20:01:52,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:52,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:52,721 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:52,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,241 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:52,922 INFO L429 AbstractCegarLoop]: === Iteration 249 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:52,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash 971862732, now seen corresponding path program 220 times [2020-10-15 20:01:52,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:52,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558480416] [2020-10-15 20:01:52,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:53,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:53,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558480416] [2020-10-15 20:01:53,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050802413] [2020-10-15 20:01:53,081 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:53,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:01:53,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:53,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:53,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:53,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:01:53,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:53,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:53,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:53,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079091415] [2020-10-15 20:01:53,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:53,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:53,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:53,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:53,407 INFO L87 Difference]: Start difference. First operand 261 states and 687 transitions. Second operand 17 states. [2020-10-15 20:01:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:54,842 INFO L93 Difference]: Finished difference Result 385 states and 962 transitions. [2020-10-15 20:01:54,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 20:01:54,843 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:54,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:54,844 INFO L225 Difference]: With dead ends: 385 [2020-10-15 20:01:54,844 INFO L226 Difference]: Without dead ends: 379 [2020-10-15 20:01:54,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=476, Invalid=1084, Unknown=0, NotChecked=0, Total=1560 [2020-10-15 20:01:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2020-10-15 20:01:54,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 257. [2020-10-15 20:01:54,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-10-15 20:01:54,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 674 transitions. [2020-10-15 20:01:54,850 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 674 transitions. Word has length 14 [2020-10-15 20:01:54,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:54,850 INFO L481 AbstractCegarLoop]: Abstraction has 257 states and 674 transitions. [2020-10-15 20:01:54,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:54,850 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 674 transitions. [2020-10-15 20:01:54,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:54,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:54,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:55,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,242 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:55,062 INFO L429 AbstractCegarLoop]: === Iteration 250 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:55,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:55,062 INFO L82 PathProgramCache]: Analyzing trace with hash 972071052, now seen corresponding path program 221 times [2020-10-15 20:01:55,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:55,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110552643] [2020-10-15 20:01:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:55,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:55,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110552643] [2020-10-15 20:01:55,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953949175] [2020-10-15 20:01:55,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:55,255 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:01:55,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:55,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:55,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:56,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:56,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:56,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:56,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025231592] [2020-10-15 20:01:56,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:56,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:56,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:56,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:56,942 INFO L87 Difference]: Start difference. First operand 257 states and 674 transitions. Second operand 17 states. [2020-10-15 20:01:58,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:01:58,266 INFO L93 Difference]: Finished difference Result 398 states and 973 transitions. [2020-10-15 20:01:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 20:01:58,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:01:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:01:58,268 INFO L225 Difference]: With dead ends: 398 [2020-10-15 20:01:58,269 INFO L226 Difference]: Without dead ends: 380 [2020-10-15 20:01:58,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=358, Invalid=902, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 20:01:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-15 20:01:58,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 264. [2020-10-15 20:01:58,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 20:01:58,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 694 transitions. [2020-10-15 20:01:58,274 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 694 transitions. Word has length 14 [2020-10-15 20:01:58,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:01:58,274 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 694 transitions. [2020-10-15 20:01:58,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:01:58,274 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 694 transitions. [2020-10-15 20:01:58,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:01:58,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:01:58,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:01:58,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 243 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2020-10-15 20:01:58,475 INFO L429 AbstractCegarLoop]: === Iteration 251 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:01:58,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:01:58,476 INFO L82 PathProgramCache]: Analyzing trace with hash 972734142, now seen corresponding path program 222 times [2020-10-15 20:01:58,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:01:58,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066502829] [2020-10-15 20:01:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:01:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:01:58,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:58,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066502829] [2020-10-15 20:01:58,633 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025652112] [2020-10-15 20:01:58,633 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:01:58,678 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:01:58,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:01:58,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:01:58,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:01:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:01:59,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:01:59,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:01:59,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622637307] [2020-10-15 20:01:59,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:01:59,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:01:59,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:01:59,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:01:59,064 INFO L87 Difference]: Start difference. First operand 264 states and 694 transitions. Second operand 17 states. [2020-10-15 20:02:00,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:00,908 INFO L93 Difference]: Finished difference Result 380 states and 942 transitions. [2020-10-15 20:02:00,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-15 20:02:00,909 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:00,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:00,910 INFO L225 Difference]: With dead ends: 380 [2020-10-15 20:02:00,910 INFO L226 Difference]: Without dead ends: 375 [2020-10-15 20:02:00,911 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=397, Invalid=935, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 20:02:00,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-15 20:02:00,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 268. [2020-10-15 20:02:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-10-15 20:02:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 708 transitions. [2020-10-15 20:02:00,915 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 708 transitions. Word has length 14 [2020-10-15 20:02:00,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:00,915 INFO L481 AbstractCegarLoop]: Abstraction has 268 states and 708 transitions. [2020-10-15 20:02:00,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 708 transitions. [2020-10-15 20:02:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:00,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:00,916 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:01,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,244 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:01,117 INFO L429 AbstractCegarLoop]: === Iteration 252 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:01,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:01,117 INFO L82 PathProgramCache]: Analyzing trace with hash 972755501, now seen corresponding path program 223 times [2020-10-15 20:02:01,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:01,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296326070] [2020-10-15 20:02:01,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:01,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:01,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296326070] [2020-10-15 20:02:01,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279975584] [2020-10-15 20:02:01,282 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:01,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:01,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:01,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:02:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:01,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:01,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:01,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666956869] [2020-10-15 20:02:01,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:01,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:01,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:01,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:01,653 INFO L87 Difference]: Start difference. First operand 268 states and 708 transitions. Second operand 17 states. [2020-10-15 20:02:03,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:03,590 INFO L93 Difference]: Finished difference Result 376 states and 942 transitions. [2020-10-15 20:02:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 20:02:03,592 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:03,593 INFO L225 Difference]: With dead ends: 376 [2020-10-15 20:02:03,593 INFO L226 Difference]: Without dead ends: 367 [2020-10-15 20:02:03,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=528, Invalid=1278, Unknown=0, NotChecked=0, Total=1806 [2020-10-15 20:02:03,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-15 20:02:03,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 270. [2020-10-15 20:02:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-10-15 20:02:03,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 718 transitions. [2020-10-15 20:02:03,598 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 718 transitions. Word has length 14 [2020-10-15 20:02:03,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:03,598 INFO L481 AbstractCegarLoop]: Abstraction has 270 states and 718 transitions. [2020-10-15 20:02:03,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:03,598 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 718 transitions. [2020-10-15 20:02:03,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:03,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:03,599 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:03,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 245 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable251 [2020-10-15 20:02:03,800 INFO L429 AbstractCegarLoop]: === Iteration 253 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:03,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:03,800 INFO L82 PathProgramCache]: Analyzing trace with hash 972756462, now seen corresponding path program 224 times [2020-10-15 20:02:03,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:03,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898612001] [2020-10-15 20:02:03,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:03,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898612001] [2020-10-15 20:02:03,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507352698] [2020-10-15 20:02:03,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:04,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:02:04,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:04,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:04,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:08,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:02:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:08,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:08,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:08,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703513795] [2020-10-15 20:02:08,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:08,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:08,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:08,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=190, Unknown=2, NotChecked=0, Total=272 [2020-10-15 20:02:08,486 INFO L87 Difference]: Start difference. First operand 270 states and 718 transitions. Second operand 17 states. [2020-10-15 20:02:13,218 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 54 DAG size of output: 36 [2020-10-15 20:02:17,391 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-15 20:02:21,691 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-10-15 20:02:25,979 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 51 DAG size of output: 40 [2020-10-15 20:02:28,078 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-15 20:02:32,654 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2020-10-15 20:02:33,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:33,502 INFO L93 Difference]: Finished difference Result 424 states and 1059 transitions. [2020-10-15 20:02:33,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 20:02:33,504 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:33,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:33,505 INFO L225 Difference]: With dead ends: 424 [2020-10-15 20:02:33,505 INFO L226 Difference]: Without dead ends: 414 [2020-10-15 20:02:33,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 28.9s TimeCoverageRelationStatistics Valid=530, Invalid=1274, Unknown=2, NotChecked=0, Total=1806 [2020-10-15 20:02:33,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-15 20:02:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 264. [2020-10-15 20:02:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-10-15 20:02:33,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 700 transitions. [2020-10-15 20:02:33,509 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 700 transitions. Word has length 14 [2020-10-15 20:02:33,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:33,509 INFO L481 AbstractCegarLoop]: Abstraction has 264 states and 700 transitions. [2020-10-15 20:02:33,509 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 700 transitions. [2020-10-15 20:02:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:33,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:33,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:33,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,246 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:33,712 INFO L429 AbstractCegarLoop]: === Iteration 254 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:33,713 INFO L82 PathProgramCache]: Analyzing trace with hash 972785292, now seen corresponding path program 225 times [2020-10-15 20:02:33,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:33,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979950754] [2020-10-15 20:02:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:33,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:33,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979950754] [2020-10-15 20:02:33,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311534931] [2020-10-15 20:02:33,886 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:33,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:02:33,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:33,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:33,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:34,221 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:02:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:34,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:34,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:34,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387522638] [2020-10-15 20:02:34,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:34,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:34,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:34,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:34,260 INFO L87 Difference]: Start difference. First operand 264 states and 700 transitions. Second operand 17 states. [2020-10-15 20:02:36,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:36,601 INFO L93 Difference]: Finished difference Result 424 states and 1057 transitions. [2020-10-15 20:02:36,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 20:02:36,603 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:36,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:36,604 INFO L225 Difference]: With dead ends: 424 [2020-10-15 20:02:36,604 INFO L226 Difference]: Without dead ends: 414 [2020-10-15 20:02:36,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=587, Invalid=1393, Unknown=0, NotChecked=0, Total=1980 [2020-10-15 20:02:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2020-10-15 20:02:36,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 263. [2020-10-15 20:02:36,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-15 20:02:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 696 transitions. [2020-10-15 20:02:36,609 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 696 transitions. Word has length 14 [2020-10-15 20:02:36,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:36,609 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 696 transitions. [2020-10-15 20:02:36,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:36,609 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 696 transitions. [2020-10-15 20:02:36,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:36,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:36,610 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:36,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253,247 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:36,811 INFO L429 AbstractCegarLoop]: === Iteration 255 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:36,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:36,811 INFO L82 PathProgramCache]: Analyzing trace with hash 979221853, now seen corresponding path program 226 times [2020-10-15 20:02:36,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:36,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584715062] [2020-10-15 20:02:36,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:36,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584715062] [2020-10-15 20:02:36,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384919244] [2020-10-15 20:02:36,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:37,009 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:02:37,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:37,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:37,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:37,288 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:37,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:37,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:37,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365519869] [2020-10-15 20:02:37,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:37,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:37,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:37,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:37,289 INFO L87 Difference]: Start difference. First operand 263 states and 696 transitions. Second operand 17 states. [2020-10-15 20:02:38,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:38,107 INFO L93 Difference]: Finished difference Result 374 states and 921 transitions. [2020-10-15 20:02:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 20:02:38,109 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:38,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:38,110 INFO L225 Difference]: With dead ends: 374 [2020-10-15 20:02:38,110 INFO L226 Difference]: Without dead ends: 360 [2020-10-15 20:02:38,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=259, Invalid=671, Unknown=0, NotChecked=0, Total=930 [2020-10-15 20:02:38,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-10-15 20:02:38,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 263. [2020-10-15 20:02:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-15 20:02:38,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 696 transitions. [2020-10-15 20:02:38,114 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 696 transitions. Word has length 14 [2020-10-15 20:02:38,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:38,114 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 696 transitions. [2020-10-15 20:02:38,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:38,115 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 696 transitions. [2020-10-15 20:02:38,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:38,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:38,115 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:38,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254,248 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:38,322 INFO L429 AbstractCegarLoop]: === Iteration 256 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:38,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:38,322 INFO L82 PathProgramCache]: Analyzing trace with hash 999776682, now seen corresponding path program 227 times [2020-10-15 20:02:38,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:38,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776063786] [2020-10-15 20:02:38,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:38,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:38,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776063786] [2020-10-15 20:02:38,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092513594] [2020-10-15 20:02:38,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:38,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:02:38,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:38,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:38,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:38,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:38,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:38,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702191370] [2020-10-15 20:02:38,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:38,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:38,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:38,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:38,826 INFO L87 Difference]: Start difference. First operand 263 states and 696 transitions. Second operand 17 states. [2020-10-15 20:02:40,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:40,122 INFO L93 Difference]: Finished difference Result 399 states and 977 transitions. [2020-10-15 20:02:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 20:02:40,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:40,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:40,126 INFO L225 Difference]: With dead ends: 399 [2020-10-15 20:02:40,126 INFO L226 Difference]: Without dead ends: 394 [2020-10-15 20:02:40,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=389, Invalid=943, Unknown=0, NotChecked=0, Total=1332 [2020-10-15 20:02:40,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-10-15 20:02:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 256. [2020-10-15 20:02:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 20:02:40,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 681 transitions. [2020-10-15 20:02:40,131 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 681 transitions. Word has length 14 [2020-10-15 20:02:40,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:40,132 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 681 transitions. [2020-10-15 20:02:40,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:40,132 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 681 transitions. [2020-10-15 20:02:40,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:40,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:40,133 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:40,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 249 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2020-10-15 20:02:40,337 INFO L429 AbstractCegarLoop]: === Iteration 257 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:40,338 INFO L82 PathProgramCache]: Analyzing trace with hash 999777643, now seen corresponding path program 228 times [2020-10-15 20:02:40,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:40,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269902093] [2020-10-15 20:02:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:40,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:40,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269902093] [2020-10-15 20:02:40,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738085586] [2020-10-15 20:02:40,514 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:40,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:02:40,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:40,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:40,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:40,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:40,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:40,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:40,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464725305] [2020-10-15 20:02:40,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:40,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:40,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:40,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:40,818 INFO L87 Difference]: Start difference. First operand 256 states and 681 transitions. Second operand 17 states. [2020-10-15 20:02:41,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:41,916 INFO L93 Difference]: Finished difference Result 396 states and 966 transitions. [2020-10-15 20:02:41,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 20:02:41,918 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:41,919 INFO L225 Difference]: With dead ends: 396 [2020-10-15 20:02:41,919 INFO L226 Difference]: Without dead ends: 382 [2020-10-15 20:02:41,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=316, Invalid=806, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 20:02:41,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-15 20:02:41,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 254. [2020-10-15 20:02:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-15 20:02:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 675 transitions. [2020-10-15 20:02:41,923 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 675 transitions. Word has length 14 [2020-10-15 20:02:41,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:41,923 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 675 transitions. [2020-10-15 20:02:41,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:41,923 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 675 transitions. [2020-10-15 20:02:41,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:41,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:41,924 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:42,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 250 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2020-10-15 20:02:42,126 INFO L429 AbstractCegarLoop]: === Iteration 258 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:42,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1000439772, now seen corresponding path program 229 times [2020-10-15 20:02:42,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:42,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532312865] [2020-10-15 20:02:42,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:42,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532312865] [2020-10-15 20:02:42,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779762949] [2020-10-15 20:02:42,307 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:42,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:42,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:42,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:42,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:42,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:42,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653839925] [2020-10-15 20:02:42,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:42,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:42,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:42,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:42,647 INFO L87 Difference]: Start difference. First operand 254 states and 675 transitions. Second operand 17 states. [2020-10-15 20:02:44,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:44,067 INFO L93 Difference]: Finished difference Result 380 states and 942 transitions. [2020-10-15 20:02:44,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 20:02:44,069 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:44,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:44,069 INFO L225 Difference]: With dead ends: 380 [2020-10-15 20:02:44,070 INFO L226 Difference]: Without dead ends: 375 [2020-10-15 20:02:44,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=407, Invalid=999, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 20:02:44,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2020-10-15 20:02:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 256. [2020-10-15 20:02:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 20:02:44,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 681 transitions. [2020-10-15 20:02:44,074 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 681 transitions. Word has length 14 [2020-10-15 20:02:44,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:44,075 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 681 transitions. [2020-10-15 20:02:44,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:44,075 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 681 transitions. [2020-10-15 20:02:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:44,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:44,075 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:44,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 251 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2020-10-15 20:02:44,276 INFO L429 AbstractCegarLoop]: === Iteration 259 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:44,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:44,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1000461131, now seen corresponding path program 230 times [2020-10-15 20:02:44,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:44,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848157022] [2020-10-15 20:02:44,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:44,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:44,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848157022] [2020-10-15 20:02:44,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072723279] [2020-10-15 20:02:44,445 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:44,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:02:44,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:44,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:44,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:44,720 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:02:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:44,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:44,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:44,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224503933] [2020-10-15 20:02:44,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:44,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:44,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:44,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:44,742 INFO L87 Difference]: Start difference. First operand 256 states and 681 transitions. Second operand 17 states. [2020-10-15 20:02:46,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:46,081 INFO L93 Difference]: Finished difference Result 352 states and 887 transitions. [2020-10-15 20:02:46,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-15 20:02:46,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:46,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:46,084 INFO L225 Difference]: With dead ends: 352 [2020-10-15 20:02:46,084 INFO L226 Difference]: Without dead ends: 342 [2020-10-15 20:02:46,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=482, Invalid=1240, Unknown=0, NotChecked=0, Total=1722 [2020-10-15 20:02:46,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-15 20:02:46,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 253. [2020-10-15 20:02:46,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-15 20:02:46,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 667 transitions. [2020-10-15 20:02:46,089 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 667 transitions. Word has length 14 [2020-10-15 20:02:46,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:46,089 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 667 transitions. [2020-10-15 20:02:46,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:46,089 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 667 transitions. [2020-10-15 20:02:46,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:46,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:46,090 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:46,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 252 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2020-10-15 20:02:46,294 INFO L429 AbstractCegarLoop]: === Iteration 260 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:46,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:46,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1000462092, now seen corresponding path program 231 times [2020-10-15 20:02:46,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:46,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447815360] [2020-10-15 20:02:46,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:46,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:46,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447815360] [2020-10-15 20:02:46,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726491762] [2020-10-15 20:02:46,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:46,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:02:46,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:46,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:46,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:46,798 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:02:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:46,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:46,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:46,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988446435] [2020-10-15 20:02:46,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:46,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:46,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:46,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:46,898 INFO L87 Difference]: Start difference. First operand 253 states and 667 transitions. Second operand 17 states. [2020-10-15 20:02:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:48,587 INFO L93 Difference]: Finished difference Result 421 states and 1043 transitions. [2020-10-15 20:02:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 20:02:48,589 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:48,590 INFO L225 Difference]: With dead ends: 421 [2020-10-15 20:02:48,590 INFO L226 Difference]: Without dead ends: 410 [2020-10-15 20:02:48,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=480, Invalid=1160, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 20:02:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-15 20:02:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 249. [2020-10-15 20:02:48,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-15 20:02:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 653 transitions. [2020-10-15 20:02:48,594 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 653 transitions. Word has length 14 [2020-10-15 20:02:48,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:48,594 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 653 transitions. [2020-10-15 20:02:48,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:48,594 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 653 transitions. [2020-10-15 20:02:48,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:48,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:48,595 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:48,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 253 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2020-10-15 20:02:48,796 INFO L429 AbstractCegarLoop]: === Iteration 261 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:48,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:48,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1000469563, now seen corresponding path program 232 times [2020-10-15 20:02:48,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:48,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153961122] [2020-10-15 20:02:48,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:48,975 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:48,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153961122] [2020-10-15 20:02:48,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13314822] [2020-10-15 20:02:48,975 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:49,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:02:49,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:49,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:49,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:49,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:49,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:49,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:49,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885045883] [2020-10-15 20:02:49,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:49,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:49,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:49,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:49,299 INFO L87 Difference]: Start difference. First operand 249 states and 653 transitions. Second operand 17 states. [2020-10-15 20:02:50,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:50,608 INFO L93 Difference]: Finished difference Result 402 states and 976 transitions. [2020-10-15 20:02:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-15 20:02:50,611 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:50,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:50,612 INFO L225 Difference]: With dead ends: 402 [2020-10-15 20:02:50,612 INFO L226 Difference]: Without dead ends: 389 [2020-10-15 20:02:50,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=412, Invalid=994, Unknown=0, NotChecked=0, Total=1406 [2020-10-15 20:02:50,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2020-10-15 20:02:50,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 251. [2020-10-15 20:02:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-15 20:02:50,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 658 transitions. [2020-10-15 20:02:50,617 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 658 transitions. Word has length 14 [2020-10-15 20:02:50,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:50,617 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 658 transitions. [2020-10-15 20:02:50,617 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:50,617 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 658 transitions. [2020-10-15 20:02:50,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:50,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:50,617 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:50,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260,254 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:50,818 INFO L429 AbstractCegarLoop]: === Iteration 262 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:50,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1000490922, now seen corresponding path program 233 times [2020-10-15 20:02:50,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:50,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725494845] [2020-10-15 20:02:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:50,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725494845] [2020-10-15 20:02:51,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090030364] [2020-10-15 20:02:51,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:51,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:02:51,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:51,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:51,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:51,285 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:02:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:51,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:51,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:51,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468225968] [2020-10-15 20:02:51,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:51,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:51,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:51,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:51,307 INFO L87 Difference]: Start difference. First operand 251 states and 658 transitions. Second operand 17 states. [2020-10-15 20:02:52,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:52,836 INFO L93 Difference]: Finished difference Result 422 states and 1042 transitions. [2020-10-15 20:02:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-15 20:02:52,838 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:52,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:52,839 INFO L225 Difference]: With dead ends: 422 [2020-10-15 20:02:52,839 INFO L226 Difference]: Without dead ends: 411 [2020-10-15 20:02:52,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 452 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=483, Invalid=1157, Unknown=0, NotChecked=0, Total=1640 [2020-10-15 20:02:52,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-10-15 20:02:52,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 249. [2020-10-15 20:02:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-15 20:02:52,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 648 transitions. [2020-10-15 20:02:52,844 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 648 transitions. Word has length 14 [2020-10-15 20:02:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:52,844 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 648 transitions. [2020-10-15 20:02:52,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:52,844 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 648 transitions. [2020-10-15 20:02:52,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:52,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:52,844 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:53,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,255 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:53,045 INFO L429 AbstractCegarLoop]: === Iteration 263 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:53,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:53,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1000491883, now seen corresponding path program 234 times [2020-10-15 20:02:53,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:53,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873670989] [2020-10-15 20:02:53,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:53,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873670989] [2020-10-15 20:02:53,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359786218] [2020-10-15 20:02:53,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:53,277 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:02:53,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:53,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:53,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:53,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:02:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:53,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:53,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:53,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019367864] [2020-10-15 20:02:53,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:53,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:53,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:53,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:53,570 INFO L87 Difference]: Start difference. First operand 249 states and 648 transitions. Second operand 17 states. [2020-10-15 20:02:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:55,327 INFO L93 Difference]: Finished difference Result 424 states and 1036 transitions. [2020-10-15 20:02:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 20:02:55,330 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:55,331 INFO L225 Difference]: With dead ends: 424 [2020-10-15 20:02:55,331 INFO L226 Difference]: Without dead ends: 396 [2020-10-15 20:02:55,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=559, Invalid=1333, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 20:02:55,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-15 20:02:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 238. [2020-10-15 20:02:55,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-15 20:02:55,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 612 transitions. [2020-10-15 20:02:55,335 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 612 transitions. Word has length 14 [2020-10-15 20:02:55,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:55,335 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 612 transitions. [2020-10-15 20:02:55,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:55,335 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 612 transitions. [2020-10-15 20:02:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:55,335 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:55,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:55,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,256 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:55,538 INFO L429 AbstractCegarLoop]: === Iteration 264 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:55,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:55,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1001384652, now seen corresponding path program 235 times [2020-10-15 20:02:55,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:55,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552408486] [2020-10-15 20:02:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:55,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:55,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552408486] [2020-10-15 20:02:55,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934544296] [2020-10-15 20:02:55,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:55,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:55,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:56,066 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:02:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:56,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:56,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:56,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520850263] [2020-10-15 20:02:56,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:56,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:56,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:56,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:56,092 INFO L87 Difference]: Start difference. First operand 238 states and 612 transitions. Second operand 17 states. [2020-10-15 20:02:58,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:58,068 INFO L93 Difference]: Finished difference Result 369 states and 896 transitions. [2020-10-15 20:02:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-15 20:02:58,070 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:58,070 INFO L225 Difference]: With dead ends: 369 [2020-10-15 20:02:58,070 INFO L226 Difference]: Without dead ends: 359 [2020-10-15 20:02:58,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=543, Invalid=1349, Unknown=0, NotChecked=0, Total=1892 [2020-10-15 20:02:58,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-15 20:02:58,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 228. [2020-10-15 20:02:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-15 20:02:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 568 transitions. [2020-10-15 20:02:58,075 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 568 transitions. Word has length 14 [2020-10-15 20:02:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:58,075 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 568 transitions. [2020-10-15 20:02:58,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 568 transitions. [2020-10-15 20:02:58,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:58,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:58,075 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:58,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 257 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable263 [2020-10-15 20:02:58,277 INFO L429 AbstractCegarLoop]: === Iteration 265 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:58,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:58,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1866754364, now seen corresponding path program 236 times [2020-10-15 20:02:58,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:58,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880101764] [2020-10-15 20:02:58,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:58,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880101764] [2020-10-15 20:02:58,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714270638] [2020-10-15 20:02:58,491 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:58,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:02:58,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:58,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:58,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:02:58,848 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:58,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:02:58,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:02:58,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476019495] [2020-10-15 20:02:58,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:02:58,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:02:58,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:02:58,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:02:58,850 INFO L87 Difference]: Start difference. First operand 228 states and 568 transitions. Second operand 17 states. [2020-10-15 20:02:59,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:02:59,395 INFO L93 Difference]: Finished difference Result 304 states and 714 transitions. [2020-10-15 20:02:59,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:02:59,397 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:02:59,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:02:59,398 INFO L225 Difference]: With dead ends: 304 [2020-10-15 20:02:59,398 INFO L226 Difference]: Without dead ends: 291 [2020-10-15 20:02:59,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2020-10-15 20:02:59,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-15 20:02:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 226. [2020-10-15 20:02:59,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-15 20:02:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 564 transitions. [2020-10-15 20:02:59,402 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 564 transitions. Word has length 14 [2020-10-15 20:02:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:02:59,402 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 564 transitions. [2020-10-15 20:02:59,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:02:59,402 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 564 transitions. [2020-10-15 20:02:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:02:59,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:02:59,403 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:02:59,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,258 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:59,608 INFO L429 AbstractCegarLoop]: === Iteration 266 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:02:59,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:02:59,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1888203884, now seen corresponding path program 237 times [2020-10-15 20:02:59,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:02:59,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718738736] [2020-10-15 20:02:59,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:02:59,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:02:59,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:02:59,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718738736] [2020-10-15 20:02:59,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652780904] [2020-10-15 20:02:59,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:02:59,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:02:59,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:02:59,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:02:59,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:00,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:00,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:03:00,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869816031] [2020-10-15 20:03:00,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:03:00,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:00,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:03:00,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:03:00,149 INFO L87 Difference]: Start difference. First operand 226 states and 564 transitions. Second operand 17 states. [2020-10-15 20:03:00,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:00,735 INFO L93 Difference]: Finished difference Result 300 states and 708 transitions. [2020-10-15 20:03:00,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:03:00,737 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:03:00,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:00,738 INFO L225 Difference]: With dead ends: 300 [2020-10-15 20:03:00,738 INFO L226 Difference]: Without dead ends: 287 [2020-10-15 20:03:00,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=189, Invalid=411, Unknown=0, NotChecked=0, Total=600 [2020-10-15 20:03:00,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-15 20:03:00,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 224. [2020-10-15 20:03:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-15 20:03:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 562 transitions. [2020-10-15 20:03:00,742 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 562 transitions. Word has length 14 [2020-10-15 20:03:00,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:00,742 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 562 transitions. [2020-10-15 20:03:00,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:03:00,742 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 562 transitions. [2020-10-15 20:03:00,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:03:00,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:00,743 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:00,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 259 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2020-10-15 20:03:00,944 INFO L429 AbstractCegarLoop]: === Iteration 267 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:00,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:00,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1888866974, now seen corresponding path program 238 times [2020-10-15 20:03:00,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:00,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762929691] [2020-10-15 20:03:00,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:01,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762929691] [2020-10-15 20:03:01,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578888674] [2020-10-15 20:03:01,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:01,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:03:01,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:01,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:03:01,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:01,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:01,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:03:01,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805239811] [2020-10-15 20:03:01,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:03:01,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:01,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:03:01,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:03:01,511 INFO L87 Difference]: Start difference. First operand 224 states and 562 transitions. Second operand 17 states. [2020-10-15 20:03:02,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:02,178 INFO L93 Difference]: Finished difference Result 294 states and 701 transitions. [2020-10-15 20:03:02,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 20:03:02,181 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:03:02,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:02,181 INFO L225 Difference]: With dead ends: 294 [2020-10-15 20:03:02,181 INFO L226 Difference]: Without dead ends: 281 [2020-10-15 20:03:02,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2020-10-15 20:03:02,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2020-10-15 20:03:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 224. [2020-10-15 20:03:02,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-15 20:03:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 560 transitions. [2020-10-15 20:03:02,185 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 560 transitions. Word has length 14 [2020-10-15 20:03:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:02,185 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 560 transitions. [2020-10-15 20:03:02,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:03:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 560 transitions. [2020-10-15 20:03:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:03:02,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:02,186 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:02,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,260 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:02,387 INFO L429 AbstractCegarLoop]: === Iteration 268 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:02,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:02,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1888889294, now seen corresponding path program 239 times [2020-10-15 20:03:02,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:02,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139984957] [2020-10-15 20:03:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:02,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139984957] [2020-10-15 20:03:02,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982976739] [2020-10-15 20:03:02,559 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:02,598 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:03:02,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:02,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:03:02,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:02,907 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-15 20:03:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:05,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:05,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-15 20:03:05,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558344089] [2020-10-15 20:03:05,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-15 20:03:05,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:05,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-15 20:03:05,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=213, Unknown=1, NotChecked=0, Total=306 [2020-10-15 20:03:05,038 INFO L87 Difference]: Start difference. First operand 224 states and 560 transitions. Second operand 18 states. [2020-10-15 20:03:08,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:08,301 INFO L93 Difference]: Finished difference Result 303 states and 720 transitions. [2020-10-15 20:03:08,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:03:08,302 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 14 [2020-10-15 20:03:08,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:08,303 INFO L225 Difference]: With dead ends: 303 [2020-10-15 20:03:08,303 INFO L226 Difference]: Without dead ends: 286 [2020-10-15 20:03:08,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=307, Invalid=622, Unknown=1, NotChecked=0, Total=930 [2020-10-15 20:03:08,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-15 20:03:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 222. [2020-10-15 20:03:08,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-15 20:03:08,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 554 transitions. [2020-10-15 20:03:08,307 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 554 transitions. Word has length 14 [2020-10-15 20:03:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:08,308 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 554 transitions. [2020-10-15 20:03:08,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-15 20:03:08,308 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 554 transitions. [2020-10-15 20:03:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 20:03:08,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:08,308 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:08,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 261 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2020-10-15 20:03:08,509 INFO L429 AbstractCegarLoop]: === Iteration 269 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:08,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1888918124, now seen corresponding path program 240 times [2020-10-15 20:03:08,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:08,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400834709] [2020-10-15 20:03:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:08,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400834709] [2020-10-15 20:03:08,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663317848] [2020-10-15 20:03:08,682 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:08,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:03:08,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:08,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-15 20:03:08,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:09,015 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 20:03:09,044 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:09,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:09,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-15 20:03:09,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145268113] [2020-10-15 20:03:09,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 20:03:09,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:09,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 20:03:09,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-15 20:03:09,045 INFO L87 Difference]: Start difference. First operand 222 states and 554 transitions. Second operand 17 states. [2020-10-15 20:03:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:09,826 INFO L93 Difference]: Finished difference Result 287 states and 679 transitions. [2020-10-15 20:03:09,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 20:03:09,829 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-15 20:03:09,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:09,830 INFO L225 Difference]: With dead ends: 287 [2020-10-15 20:03:09,830 INFO L226 Difference]: Without dead ends: 271 [2020-10-15 20:03:09,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-15 20:03:09,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2020-10-15 20:03:09,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 216. [2020-10-15 20:03:09,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-15 20:03:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 535 transitions. [2020-10-15 20:03:09,833 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 535 transitions. Word has length 14 [2020-10-15 20:03:09,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:09,834 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 535 transitions. [2020-10-15 20:03:09,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 20:03:09,834 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 535 transitions. [2020-10-15 20:03:09,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:03:09,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:09,834 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:10,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268,262 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:10,035 INFO L429 AbstractCegarLoop]: === Iteration 270 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:10,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:10,035 INFO L82 PathProgramCache]: Analyzing trace with hash 491278210, now seen corresponding path program 241 times [2020-10-15 20:03:10,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:10,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647717731] [2020-10-15 20:03:10,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:10,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647717731] [2020-10-15 20:03:10,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761686798] [2020-10-15 20:03:10,276 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:10,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:03:10,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:10,722 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:10,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:10,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:03:10,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077569365] [2020-10-15 20:03:10,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:03:10,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:10,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:03:10,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:03:10,723 INFO L87 Difference]: Start difference. First operand 216 states and 535 transitions. Second operand 19 states. [2020-10-15 20:03:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:11,194 INFO L93 Difference]: Finished difference Result 268 states and 633 transitions. [2020-10-15 20:03:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 20:03:11,197 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:03:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:11,197 INFO L225 Difference]: With dead ends: 268 [2020-10-15 20:03:11,197 INFO L226 Difference]: Without dead ends: 266 [2020-10-15 20:03:11,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=172, Invalid=380, Unknown=0, NotChecked=0, Total=552 [2020-10-15 20:03:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-15 20:03:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 227. [2020-10-15 20:03:11,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-15 20:03:11,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 563 transitions. [2020-10-15 20:03:11,200 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 563 transitions. Word has length 15 [2020-10-15 20:03:11,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:11,201 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 563 transitions. [2020-10-15 20:03:11,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:03:11,201 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 563 transitions. [2020-10-15 20:03:11,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:03:11,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:11,201 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:11,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 263 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable269 [2020-10-15 20:03:11,402 INFO L429 AbstractCegarLoop]: === Iteration 271 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:11,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:11,402 INFO L82 PathProgramCache]: Analyzing trace with hash 491307040, now seen corresponding path program 242 times [2020-10-15 20:03:11,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:11,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51354424] [2020-10-15 20:03:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:11,652 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:11,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51354424] [2020-10-15 20:03:11,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528170386] [2020-10-15 20:03:11,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:11,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:03:11,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:11,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:03:11,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:12,788 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:12,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:12,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:03:12,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221516071] [2020-10-15 20:03:12,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:03:12,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:12,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:03:12,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:03:12,789 INFO L87 Difference]: Start difference. First operand 227 states and 563 transitions. Second operand 19 states. [2020-10-15 20:03:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:13,403 INFO L93 Difference]: Finished difference Result 295 states and 691 transitions. [2020-10-15 20:03:13,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 20:03:13,405 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:03:13,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:13,406 INFO L225 Difference]: With dead ends: 295 [2020-10-15 20:03:13,406 INFO L226 Difference]: Without dead ends: 292 [2020-10-15 20:03:13,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=221, Invalid=429, Unknown=0, NotChecked=0, Total=650 [2020-10-15 20:03:13,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-15 20:03:13,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 229. [2020-10-15 20:03:13,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-15 20:03:13,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 569 transitions. [2020-10-15 20:03:13,414 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 569 transitions. Word has length 15 [2020-10-15 20:03:13,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:13,414 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 569 transitions. [2020-10-15 20:03:13,414 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:03:13,414 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 569 transitions. [2020-10-15 20:03:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:03:13,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:13,415 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:13,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 264 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2020-10-15 20:03:13,615 INFO L429 AbstractCegarLoop]: === Iteration 272 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:13,616 INFO L82 PathProgramCache]: Analyzing trace with hash 492200770, now seen corresponding path program 243 times [2020-10-15 20:03:13,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:13,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875696671] [2020-10-15 20:03:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:13,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875696671] [2020-10-15 20:03:13,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279237078] [2020-10-15 20:03:13,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:13,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:03:13,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:13,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:03:13,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:18,425 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:18,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:18,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:03:18,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434188811] [2020-10-15 20:03:18,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:03:18,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:18,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:03:18,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:03:18,426 INFO L87 Difference]: Start difference. First operand 229 states and 569 transitions. Second operand 19 states. [2020-10-15 20:03:19,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:19,215 INFO L93 Difference]: Finished difference Result 294 states and 687 transitions. [2020-10-15 20:03:19,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 20:03:19,218 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:03:19,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:19,218 INFO L225 Difference]: With dead ends: 294 [2020-10-15 20:03:19,218 INFO L226 Difference]: Without dead ends: 292 [2020-10-15 20:03:19,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=244, Invalid=458, Unknown=0, NotChecked=0, Total=702 [2020-10-15 20:03:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-15 20:03:19,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 231. [2020-10-15 20:03:19,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-15 20:03:19,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 575 transitions. [2020-10-15 20:03:19,222 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 575 transitions. Word has length 15 [2020-10-15 20:03:19,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:19,222 INFO L481 AbstractCegarLoop]: Abstraction has 231 states and 575 transitions. [2020-10-15 20:03:19,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:03:19,222 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 575 transitions. [2020-10-15 20:03:19,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:03:19,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:19,223 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:19,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,265 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:19,423 INFO L429 AbstractCegarLoop]: === Iteration 273 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:19,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 492201731, now seen corresponding path program 244 times [2020-10-15 20:03:19,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:19,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544394955] [2020-10-15 20:03:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:19,674 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:19,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544394955] [2020-10-15 20:03:19,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132869185] [2020-10-15 20:03:19,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:19,716 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:03:19,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:19,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:03:19,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:24,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:24,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:03:24,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484822555] [2020-10-15 20:03:24,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:03:24,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:24,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:03:24,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=236, Unknown=1, NotChecked=0, Total=342 [2020-10-15 20:03:24,542 INFO L87 Difference]: Start difference. First operand 231 states and 575 transitions. Second operand 19 states. [2020-10-15 20:03:28,888 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-15 20:03:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:29,533 INFO L93 Difference]: Finished difference Result 320 states and 746 transitions. [2020-10-15 20:03:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 20:03:29,535 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:03:29,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:29,536 INFO L225 Difference]: With dead ends: 320 [2020-10-15 20:03:29,536 INFO L226 Difference]: Without dead ends: 316 [2020-10-15 20:03:29,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=231, Invalid=470, Unknown=1, NotChecked=0, Total=702 [2020-10-15 20:03:29,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-15 20:03:29,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 232. [2020-10-15 20:03:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 20:03:29,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 578 transitions. [2020-10-15 20:03:29,539 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 578 transitions. Word has length 15 [2020-10-15 20:03:29,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:29,539 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 578 transitions. [2020-10-15 20:03:29,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:03:29,540 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 578 transitions. [2020-10-15 20:03:29,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:03:29,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:29,540 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:29,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,266 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:29,741 INFO L429 AbstractCegarLoop]: === Iteration 274 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:29,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:29,741 INFO L82 PathProgramCache]: Analyzing trace with hash 492230561, now seen corresponding path program 245 times [2020-10-15 20:03:29,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:29,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805892724] [2020-10-15 20:03:29,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:29,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805892724] [2020-10-15 20:03:29,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180485393] [2020-10-15 20:03:29,997 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:30,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:03:30,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:30,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:03:30,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:30,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:30,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:30,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:03:30,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300357617] [2020-10-15 20:03:30,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:03:30,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:30,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:03:30,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:03:30,586 INFO L87 Difference]: Start difference. First operand 232 states and 578 transitions. Second operand 19 states. [2020-10-15 20:03:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:31,391 INFO L93 Difference]: Finished difference Result 311 states and 727 transitions. [2020-10-15 20:03:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 20:03:31,393 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:03:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:31,394 INFO L225 Difference]: With dead ends: 311 [2020-10-15 20:03:31,394 INFO L226 Difference]: Without dead ends: 308 [2020-10-15 20:03:31,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=242, Invalid=460, Unknown=0, NotChecked=0, Total=702 [2020-10-15 20:03:31,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-15 20:03:31,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 232. [2020-10-15 20:03:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-15 20:03:31,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 578 transitions. [2020-10-15 20:03:31,398 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 578 transitions. Word has length 15 [2020-10-15 20:03:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:31,398 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 578 transitions. [2020-10-15 20:03:31,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:03:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 578 transitions. [2020-10-15 20:03:31,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:03:31,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:31,399 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:31,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,267 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:31,600 INFO L429 AbstractCegarLoop]: === Iteration 275 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:31,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:31,600 INFO L82 PathProgramCache]: Analyzing trace with hash 519906400, now seen corresponding path program 246 times [2020-10-15 20:03:31,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:31,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062217196] [2020-10-15 20:03:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:31,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062217196] [2020-10-15 20:03:31,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561962193] [2020-10-15 20:03:31,862 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:31,902 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:03:31,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:31,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:03:31,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:32,410 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:32,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:32,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:03:32,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133683928] [2020-10-15 20:03:32,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:03:32,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:32,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:03:32,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:03:32,412 INFO L87 Difference]: Start difference. First operand 232 states and 578 transitions. Second operand 19 states. [2020-10-15 20:03:33,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:33,427 INFO L93 Difference]: Finished difference Result 299 states and 700 transitions. [2020-10-15 20:03:33,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 20:03:33,429 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:03:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:33,430 INFO L225 Difference]: With dead ends: 299 [2020-10-15 20:03:33,430 INFO L226 Difference]: Without dead ends: 297 [2020-10-15 20:03:33,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=275, Invalid=537, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:03:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-15 20:03:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 235. [2020-10-15 20:03:33,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-15 20:03:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-15 20:03:33,435 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-15 20:03:33,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:33,435 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-15 20:03:33,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:03:33,435 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-15 20:03:33,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:03:33,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:33,436 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:33,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,268 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:33,639 INFO L429 AbstractCegarLoop]: === Iteration 276 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:33,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:33,640 INFO L82 PathProgramCache]: Analyzing trace with hash 519907361, now seen corresponding path program 247 times [2020-10-15 20:03:33,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:33,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484884778] [2020-10-15 20:03:33,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:33,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484884778] [2020-10-15 20:03:33,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512627392] [2020-10-15 20:03:33,905 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:33,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:03:33,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:36,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:36,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:03:36,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102294934] [2020-10-15 20:03:36,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:03:36,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:36,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:03:36,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=238, Unknown=1, NotChecked=0, Total=342 [2020-10-15 20:03:36,515 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 19 states. [2020-10-15 20:03:37,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:03:37,638 INFO L93 Difference]: Finished difference Result 325 states and 758 transitions. [2020-10-15 20:03:37,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 20:03:37,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:03:37,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:03:37,641 INFO L225 Difference]: With dead ends: 325 [2020-10-15 20:03:37,641 INFO L226 Difference]: Without dead ends: 321 [2020-10-15 20:03:37,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=248, Invalid=507, Unknown=1, NotChecked=0, Total=756 [2020-10-15 20:03:37,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-15 20:03:37,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 235. [2020-10-15 20:03:37,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-15 20:03:37,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 587 transitions. [2020-10-15 20:03:37,646 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 587 transitions. Word has length 15 [2020-10-15 20:03:37,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:03:37,646 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 587 transitions. [2020-10-15 20:03:37,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:03:37,646 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 587 transitions. [2020-10-15 20:03:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:03:37,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:03:37,646 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:03:37,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 269 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable275 [2020-10-15 20:03:37,849 INFO L429 AbstractCegarLoop]: === Iteration 277 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:03:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:03:37,849 INFO L82 PathProgramCache]: Analyzing trace with hash 519936191, now seen corresponding path program 248 times [2020-10-15 20:03:37,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:03:37,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013607184] [2020-10-15 20:03:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:03:37,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:03:38,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:38,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013607184] [2020-10-15 20:03:38,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699780898] [2020-10-15 20:03:38,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:03:38,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:03:38,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:03:38,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:03:38,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:03:52,575 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-15 20:03:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:03:53,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:03:53,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:03:53,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039276074] [2020-10-15 20:03:53,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:03:53,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:03:53,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:03:53,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=231, Unknown=6, NotChecked=0, Total=342 [2020-10-15 20:03:53,063 INFO L87 Difference]: Start difference. First operand 235 states and 587 transitions. Second operand 19 states. [2020-10-15 20:03:57,403 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-15 20:04:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:06,042 INFO L93 Difference]: Finished difference Result 337 states and 786 transitions. [2020-10-15 20:04:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:04:06,044 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:06,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:06,045 INFO L225 Difference]: With dead ends: 337 [2020-10-15 20:04:06,045 INFO L226 Difference]: Without dead ends: 333 [2020-10-15 20:04:06,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=253, Invalid=496, Unknown=7, NotChecked=0, Total=756 [2020-10-15 20:04:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-15 20:04:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 236. [2020-10-15 20:04:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-15 20:04:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 590 transitions. [2020-10-15 20:04:06,050 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 590 transitions. Word has length 15 [2020-10-15 20:04:06,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:06,050 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 590 transitions. [2020-10-15 20:04:06,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:06,050 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 590 transitions. [2020-10-15 20:04:06,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:06,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:06,051 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:06,261 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,270 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:06,262 INFO L429 AbstractCegarLoop]: === Iteration 278 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:06,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:06,262 INFO L82 PathProgramCache]: Analyzing trace with hash 520830882, now seen corresponding path program 249 times [2020-10-15 20:04:06,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:06,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999702465] [2020-10-15 20:04:06,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:06,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:06,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999702465] [2020-10-15 20:04:06,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088435766] [2020-10-15 20:04:06,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:06,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:04:06,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:06,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:06,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:08,754 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:08,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:08,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:08,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533992574] [2020-10-15 20:04:08,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:08,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:08,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:08,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:08,755 INFO L87 Difference]: Start difference. First operand 236 states and 590 transitions. Second operand 19 states. [2020-10-15 20:04:09,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:09,726 INFO L93 Difference]: Finished difference Result 335 states and 781 transitions. [2020-10-15 20:04:09,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:04:09,728 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:09,729 INFO L225 Difference]: With dead ends: 335 [2020-10-15 20:04:09,729 INFO L226 Difference]: Without dead ends: 319 [2020-10-15 20:04:09,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=246, Invalid=510, Unknown=0, NotChecked=0, Total=756 [2020-10-15 20:04:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-15 20:04:09,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 236. [2020-10-15 20:04:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-15 20:04:09,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 583 transitions. [2020-10-15 20:04:09,734 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 583 transitions. Word has length 15 [2020-10-15 20:04:09,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:09,734 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 583 transitions. [2020-10-15 20:04:09,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:09,734 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 583 transitions. [2020-10-15 20:04:09,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:09,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:09,735 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:09,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 271 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2020-10-15 20:04:09,935 INFO L429 AbstractCegarLoop]: === Iteration 279 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:09,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1378780930, now seen corresponding path program 250 times [2020-10-15 20:04:09,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:09,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132512238] [2020-10-15 20:04:09,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:09,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:10,179 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:10,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132512238] [2020-10-15 20:04:10,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411310620] [2020-10-15 20:04:10,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:10,219 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:04:10,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:10,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:10,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:10,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:10,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:10,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693003478] [2020-10-15 20:04:10,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:10,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:10,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:10,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:10,638 INFO L87 Difference]: Start difference. First operand 236 states and 583 transitions. Second operand 19 states. [2020-10-15 20:04:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:11,582 INFO L93 Difference]: Finished difference Result 297 states and 694 transitions. [2020-10-15 20:04:11,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:04:11,584 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:11,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:11,585 INFO L225 Difference]: With dead ends: 297 [2020-10-15 20:04:11,585 INFO L226 Difference]: Without dead ends: 295 [2020-10-15 20:04:11,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=307, Invalid=623, Unknown=0, NotChecked=0, Total=930 [2020-10-15 20:04:11,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-15 20:04:11,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 240. [2020-10-15 20:04:11,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-15 20:04:11,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 594 transitions. [2020-10-15 20:04:11,594 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 594 transitions. Word has length 15 [2020-10-15 20:04:11,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:11,594 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 594 transitions. [2020-10-15 20:04:11,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:11,594 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 594 transitions. [2020-10-15 20:04:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:11,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:11,594 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:11,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278,272 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:11,795 INFO L429 AbstractCegarLoop]: === Iteration 280 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:11,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:11,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1378781891, now seen corresponding path program 251 times [2020-10-15 20:04:11,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:11,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642840517] [2020-10-15 20:04:11,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:12,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642840517] [2020-10-15 20:04:12,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279079890] [2020-10-15 20:04:12,047 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:12,088 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:04:12,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:12,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:12,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:12,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:12,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:12,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087151078] [2020-10-15 20:04:12,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:12,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:12,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:12,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:12,507 INFO L87 Difference]: Start difference. First operand 240 states and 594 transitions. Second operand 19 states. [2020-10-15 20:04:13,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:13,437 INFO L93 Difference]: Finished difference Result 321 states and 746 transitions. [2020-10-15 20:04:13,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:04:13,439 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:13,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:13,440 INFO L225 Difference]: With dead ends: 321 [2020-10-15 20:04:13,440 INFO L226 Difference]: Without dead ends: 318 [2020-10-15 20:04:13,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=274, Invalid=596, Unknown=0, NotChecked=0, Total=870 [2020-10-15 20:04:13,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-15 20:04:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 239. [2020-10-15 20:04:13,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-15 20:04:13,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 591 transitions. [2020-10-15 20:04:13,444 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 591 transitions. Word has length 15 [2020-10-15 20:04:13,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:13,444 INFO L481 AbstractCegarLoop]: Abstraction has 239 states and 591 transitions. [2020-10-15 20:04:13,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:13,444 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 591 transitions. [2020-10-15 20:04:13,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:13,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:13,445 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:13,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 273 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2020-10-15 20:04:13,645 INFO L429 AbstractCegarLoop]: === Iteration 281 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:13,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:13,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1378810721, now seen corresponding path program 252 times [2020-10-15 20:04:13,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:13,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159685215] [2020-10-15 20:04:13,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:13,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159685215] [2020-10-15 20:04:13,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679181149] [2020-10-15 20:04:13,924 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:13,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-15 20:04:13,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:13,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:13,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:14,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:14,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:14,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185737542] [2020-10-15 20:04:14,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:14,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:14,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:14,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:14,606 INFO L87 Difference]: Start difference. First operand 239 states and 591 transitions. Second operand 19 states. [2020-10-15 20:04:15,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:15,531 INFO L93 Difference]: Finished difference Result 332 states and 772 transitions. [2020-10-15 20:04:15,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:04:15,534 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:15,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:15,534 INFO L225 Difference]: With dead ends: 332 [2020-10-15 20:04:15,534 INFO L226 Difference]: Without dead ends: 328 [2020-10-15 20:04:15,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=267, Invalid=545, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:04:15,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-15 20:04:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 238. [2020-10-15 20:04:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-15 20:04:15,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 588 transitions. [2020-10-15 20:04:15,537 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 588 transitions. Word has length 15 [2020-10-15 20:04:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:15,538 INFO L481 AbstractCegarLoop]: Abstraction has 238 states and 588 transitions. [2020-10-15 20:04:15,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 588 transitions. [2020-10-15 20:04:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:15,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:15,538 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:15,738 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,274 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:15,739 INFO L429 AbstractCegarLoop]: === Iteration 282 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:15,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:15,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1379704451, now seen corresponding path program 253 times [2020-10-15 20:04:15,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:15,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532290830] [2020-10-15 20:04:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:15,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532290830] [2020-10-15 20:04:15,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773968636] [2020-10-15 20:04:15,988 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:16,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:16,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:16,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:16,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:16,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:16,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462937019] [2020-10-15 20:04:16,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:16,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:16,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:16,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:16,445 INFO L87 Difference]: Start difference. First operand 238 states and 588 transitions. Second operand 19 states. [2020-10-15 20:04:17,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:17,368 INFO L93 Difference]: Finished difference Result 341 states and 793 transitions. [2020-10-15 20:04:17,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 20:04:17,371 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:17,371 INFO L225 Difference]: With dead ends: 341 [2020-10-15 20:04:17,371 INFO L226 Difference]: Without dead ends: 337 [2020-10-15 20:04:17,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=302, Invalid=628, Unknown=0, NotChecked=0, Total=930 [2020-10-15 20:04:17,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-15 20:04:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 243. [2020-10-15 20:04:17,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-10-15 20:04:17,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 601 transitions. [2020-10-15 20:04:17,376 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 601 transitions. Word has length 15 [2020-10-15 20:04:17,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:17,376 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 601 transitions. [2020-10-15 20:04:17,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:17,376 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 601 transitions. [2020-10-15 20:04:17,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:17,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:17,376 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:17,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,275 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:17,577 INFO L429 AbstractCegarLoop]: === Iteration 283 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:17,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:17,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1379705412, now seen corresponding path program 254 times [2020-10-15 20:04:17,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:17,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942922380] [2020-10-15 20:04:17,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:17,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:17,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942922380] [2020-10-15 20:04:17,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1447573426] [2020-10-15 20:04:17,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:17,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:04:17,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:17,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:17,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:18,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:18,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:18,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:18,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425899196] [2020-10-15 20:04:18,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:18,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:18,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:18,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:18,272 INFO L87 Difference]: Start difference. First operand 243 states and 601 transitions. Second operand 19 states. [2020-10-15 20:04:19,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:19,067 INFO L93 Difference]: Finished difference Result 341 states and 794 transitions. [2020-10-15 20:04:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 20:04:19,070 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:19,070 INFO L225 Difference]: With dead ends: 341 [2020-10-15 20:04:19,071 INFO L226 Difference]: Without dead ends: 326 [2020-10-15 20:04:19,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:04:19,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-15 20:04:19,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 244. [2020-10-15 20:04:19,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-15 20:04:19,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 601 transitions. [2020-10-15 20:04:19,074 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 601 transitions. Word has length 15 [2020-10-15 20:04:19,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:19,075 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 601 transitions. [2020-10-15 20:04:19,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:19,075 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 601 transitions. [2020-10-15 20:04:19,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:19,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:19,075 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:19,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 276 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable282 [2020-10-15 20:04:19,276 INFO L429 AbstractCegarLoop]: === Iteration 284 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:19,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:19,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1379734242, now seen corresponding path program 255 times [2020-10-15 20:04:19,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:19,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378125600] [2020-10-15 20:04:19,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:19,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378125600] [2020-10-15 20:04:19,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492398838] [2020-10-15 20:04:19,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:19,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:04:19,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:19,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:19,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:19,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:19,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:19,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954052090] [2020-10-15 20:04:19,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:19,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:19,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:19,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:19,983 INFO L87 Difference]: Start difference. First operand 244 states and 601 transitions. Second operand 19 states. [2020-10-15 20:04:20,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:20,962 INFO L93 Difference]: Finished difference Result 339 states and 790 transitions. [2020-10-15 20:04:20,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 20:04:20,965 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:20,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:20,966 INFO L225 Difference]: With dead ends: 339 [2020-10-15 20:04:20,966 INFO L226 Difference]: Without dead ends: 328 [2020-10-15 20:04:20,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=301, Invalid=629, Unknown=0, NotChecked=0, Total=930 [2020-10-15 20:04:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-15 20:04:20,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 242. [2020-10-15 20:04:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-15 20:04:20,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 596 transitions. [2020-10-15 20:04:20,970 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 596 transitions. Word has length 15 [2020-10-15 20:04:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:20,970 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 596 transitions. [2020-10-15 20:04:20,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 596 transitions. [2020-10-15 20:04:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:20,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:20,971 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:21,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283,277 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:21,172 INFO L429 AbstractCegarLoop]: === Iteration 285 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:21,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1407411042, now seen corresponding path program 256 times [2020-10-15 20:04:21,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:21,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435375135] [2020-10-15 20:04:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:21,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:21,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435375135] [2020-10-15 20:04:21,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688319033] [2020-10-15 20:04:21,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:21,462 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:04:21,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:21,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:21,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:22,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:22,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:22,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392027185] [2020-10-15 20:04:22,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:22,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:22,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:22,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:22,001 INFO L87 Difference]: Start difference. First operand 242 states and 596 transitions. Second operand 19 states. [2020-10-15 20:04:23,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:23,347 INFO L93 Difference]: Finished difference Result 344 states and 797 transitions. [2020-10-15 20:04:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 20:04:23,350 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:23,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:23,350 INFO L225 Difference]: With dead ends: 344 [2020-10-15 20:04:23,351 INFO L226 Difference]: Without dead ends: 331 [2020-10-15 20:04:23,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=318, Invalid=674, Unknown=0, NotChecked=0, Total=992 [2020-10-15 20:04:23,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-15 20:04:23,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 242. [2020-10-15 20:04:23,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-15 20:04:23,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 594 transitions. [2020-10-15 20:04:23,355 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 594 transitions. Word has length 15 [2020-10-15 20:04:23,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:23,355 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 594 transitions. [2020-10-15 20:04:23,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:23,355 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 594 transitions. [2020-10-15 20:04:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:23,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:23,355 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:23,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284,278 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:23,556 INFO L429 AbstractCegarLoop]: === Iteration 286 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:23,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:23,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1407439872, now seen corresponding path program 257 times [2020-10-15 20:04:23,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:23,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861078019] [2020-10-15 20:04:23,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:23,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861078019] [2020-10-15 20:04:23,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898351549] [2020-10-15 20:04:23,814 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:23,857 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:04:23,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:23,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:23,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:30,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:30,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:30,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054358372] [2020-10-15 20:04:30,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:30,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:30,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2020-10-15 20:04:30,517 INFO L87 Difference]: Start difference. First operand 242 states and 594 transitions. Second operand 19 states. [2020-10-15 20:04:34,974 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-15 20:04:39,301 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-15 20:04:41,837 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-15 20:04:42,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:42,220 INFO L93 Difference]: Finished difference Result 327 states and 762 transitions. [2020-10-15 20:04:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 20:04:42,223 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:42,224 INFO L225 Difference]: With dead ends: 327 [2020-10-15 20:04:42,224 INFO L226 Difference]: Without dead ends: 323 [2020-10-15 20:04:42,224 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=292, Invalid=636, Unknown=2, NotChecked=0, Total=930 [2020-10-15 20:04:42,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2020-10-15 20:04:42,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 240. [2020-10-15 20:04:42,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-15 20:04:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 590 transitions. [2020-10-15 20:04:42,228 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 590 transitions. Word has length 15 [2020-10-15 20:04:42,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:42,228 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 590 transitions. [2020-10-15 20:04:42,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:42,228 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 590 transitions. [2020-10-15 20:04:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:42,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:42,228 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:42,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285,279 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:42,430 INFO L429 AbstractCegarLoop]: === Iteration 287 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:42,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2060879712, now seen corresponding path program 258 times [2020-10-15 20:04:42,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:42,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056483007] [2020-10-15 20:04:42,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:42,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056483007] [2020-10-15 20:04:42,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238520561] [2020-10-15 20:04:42,712 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:42,755 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-15 20:04:42,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:42,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:42,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:43,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:43,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:43,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173458935] [2020-10-15 20:04:43,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:43,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:43,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:43,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:43,135 INFO L87 Difference]: Start difference. First operand 240 states and 590 transitions. Second operand 19 states. [2020-10-15 20:04:43,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:43,881 INFO L93 Difference]: Finished difference Result 291 states and 682 transitions. [2020-10-15 20:04:43,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 20:04:43,884 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:43,885 INFO L225 Difference]: With dead ends: 291 [2020-10-15 20:04:43,885 INFO L226 Difference]: Without dead ends: 289 [2020-10-15 20:04:43,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=237, Invalid=519, Unknown=0, NotChecked=0, Total=756 [2020-10-15 20:04:43,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-15 20:04:43,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2020-10-15 20:04:43,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-15 20:04:43,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 605 transitions. [2020-10-15 20:04:43,888 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 605 transitions. Word has length 15 [2020-10-15 20:04:43,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:43,888 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 605 transitions. [2020-10-15 20:04:43,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 605 transitions. [2020-10-15 20:04:43,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:43,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:43,889 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:44,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286,280 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:44,090 INFO L429 AbstractCegarLoop]: === Iteration 288 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:44,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:44,090 INFO L82 PathProgramCache]: Analyzing trace with hash -2060878751, now seen corresponding path program 259 times [2020-10-15 20:04:44,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:44,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851178880] [2020-10-15 20:04:44,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:44,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:44,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851178880] [2020-10-15 20:04:44,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651999855] [2020-10-15 20:04:44,361 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:44,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:44,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:44,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:44,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:44,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222307790] [2020-10-15 20:04:44,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:44,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:44,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:44,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:44,835 INFO L87 Difference]: Start difference. First operand 246 states and 605 transitions. Second operand 19 states. [2020-10-15 20:04:45,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:45,676 INFO L93 Difference]: Finished difference Result 316 states and 735 transitions. [2020-10-15 20:04:45,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 20:04:45,678 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:45,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:45,679 INFO L225 Difference]: With dead ends: 316 [2020-10-15 20:04:45,679 INFO L226 Difference]: Without dead ends: 313 [2020-10-15 20:04:45,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=234, Invalid=522, Unknown=0, NotChecked=0, Total=756 [2020-10-15 20:04:45,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-15 20:04:45,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 245. [2020-10-15 20:04:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-15 20:04:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 602 transitions. [2020-10-15 20:04:45,683 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 602 transitions. Word has length 15 [2020-10-15 20:04:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:45,683 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 602 transitions. [2020-10-15 20:04:45,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 602 transitions. [2020-10-15 20:04:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:45,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:45,684 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:45,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 281 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable287 [2020-10-15 20:04:45,885 INFO L429 AbstractCegarLoop]: === Iteration 289 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:45,885 INFO L82 PathProgramCache]: Analyzing trace with hash -2060849921, now seen corresponding path program 260 times [2020-10-15 20:04:45,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:45,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584082917] [2020-10-15 20:04:45,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:46,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584082917] [2020-10-15 20:04:46,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723170754] [2020-10-15 20:04:46,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:46,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:04:46,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:46,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:46,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:46,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:46,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:46,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:46,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557263306] [2020-10-15 20:04:46,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:46,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:46,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:46,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:46,826 INFO L87 Difference]: Start difference. First operand 245 states and 602 transitions. Second operand 19 states. [2020-10-15 20:04:47,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:47,756 INFO L93 Difference]: Finished difference Result 330 states and 766 transitions. [2020-10-15 20:04:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:04:47,759 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:47,760 INFO L225 Difference]: With dead ends: 330 [2020-10-15 20:04:47,760 INFO L226 Difference]: Without dead ends: 326 [2020-10-15 20:04:47,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-15 20:04:47,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-10-15 20:04:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 244. [2020-10-15 20:04:47,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-15 20:04:47,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 599 transitions. [2020-10-15 20:04:47,764 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 599 transitions. Word has length 15 [2020-10-15 20:04:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:47,764 INFO L481 AbstractCegarLoop]: Abstraction has 244 states and 599 transitions. [2020-10-15 20:04:47,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 599 transitions. [2020-10-15 20:04:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:47,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:47,764 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:47,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 282 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable288 [2020-10-15 20:04:47,965 INFO L429 AbstractCegarLoop]: === Iteration 290 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:47,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:47,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2059956191, now seen corresponding path program 261 times [2020-10-15 20:04:47,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:47,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527692348] [2020-10-15 20:04:47,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:48,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:48,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527692348] [2020-10-15 20:04:48,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628985291] [2020-10-15 20:04:48,246 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:48,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 20:04:48,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:48,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:48,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:48,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:48,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:48,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942450491] [2020-10-15 20:04:48,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:48,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:48,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:48,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:04:48,787 INFO L87 Difference]: Start difference. First operand 244 states and 599 transitions. Second operand 19 states. [2020-10-15 20:04:49,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:04:49,916 INFO L93 Difference]: Finished difference Result 328 states and 761 transitions. [2020-10-15 20:04:49,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 20:04:49,919 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:04:49,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:04:49,920 INFO L225 Difference]: With dead ends: 328 [2020-10-15 20:04:49,920 INFO L226 Difference]: Without dead ends: 324 [2020-10-15 20:04:49,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=274, Invalid=596, Unknown=0, NotChecked=0, Total=870 [2020-10-15 20:04:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-15 20:04:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 251. [2020-10-15 20:04:49,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-15 20:04:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 616 transitions. [2020-10-15 20:04:49,923 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 616 transitions. Word has length 15 [2020-10-15 20:04:49,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:04:49,923 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 616 transitions. [2020-10-15 20:04:49,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:04:49,923 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 616 transitions. [2020-10-15 20:04:49,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:04:49,924 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:04:49,924 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:04:50,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 283 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable289 [2020-10-15 20:04:50,125 INFO L429 AbstractCegarLoop]: === Iteration 291 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:04:50,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:04:50,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2059955230, now seen corresponding path program 262 times [2020-10-15 20:04:50,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:04:50,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258278523] [2020-10-15 20:04:50,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:04:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:04:50,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:50,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258278523] [2020-10-15 20:04:50,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944250176] [2020-10-15 20:04:50,418 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:04:50,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:04:50,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:04:50,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:04:50,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:04:58,469 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:04:58,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:04:58,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:04:58,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422224718] [2020-10-15 20:04:58,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:04:58,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:04:58,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:04:58,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=243, Unknown=2, NotChecked=0, Total=342 [2020-10-15 20:04:58,470 INFO L87 Difference]: Start difference. First operand 251 states and 616 transitions. Second operand 19 states. [2020-10-15 20:05:03,080 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 52 DAG size of output: 42 [2020-10-15 20:05:07,288 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-15 20:05:09,705 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-15 20:05:10,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:10,308 INFO L93 Difference]: Finished difference Result 348 states and 801 transitions. [2020-10-15 20:05:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 20:05:10,311 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:10,312 INFO L225 Difference]: With dead ends: 348 [2020-10-15 20:05:10,312 INFO L226 Difference]: Without dead ends: 332 [2020-10-15 20:05:10,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=292, Invalid=636, Unknown=2, NotChecked=0, Total=930 [2020-10-15 20:05:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-15 20:05:10,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 254. [2020-10-15 20:05:10,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-15 20:05:10,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 619 transitions. [2020-10-15 20:05:10,316 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 619 transitions. Word has length 15 [2020-10-15 20:05:10,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:10,317 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 619 transitions. [2020-10-15 20:05:10,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:10,317 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 619 transitions. [2020-10-15 20:05:10,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:10,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:10,317 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:10,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290,284 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:10,518 INFO L429 AbstractCegarLoop]: === Iteration 292 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:10,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:10,518 INFO L82 PathProgramCache]: Analyzing trace with hash -2059926400, now seen corresponding path program 263 times [2020-10-15 20:05:10,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:10,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028692538] [2020-10-15 20:05:10,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:10,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028692538] [2020-10-15 20:05:10,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474655937] [2020-10-15 20:05:10,800 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:10,846 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-15 20:05:10,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:05:10,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:10,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:11,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:11,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:05:11,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819598931] [2020-10-15 20:05:11,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:05:11,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:11,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:05:11,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:05:11,435 INFO L87 Difference]: Start difference. First operand 254 states and 619 transitions. Second operand 19 states. [2020-10-15 20:05:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:12,896 INFO L93 Difference]: Finished difference Result 342 states and 787 transitions. [2020-10-15 20:05:12,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 20:05:12,898 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:12,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:12,899 INFO L225 Difference]: With dead ends: 342 [2020-10-15 20:05:12,899 INFO L226 Difference]: Without dead ends: 331 [2020-10-15 20:05:12,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=342, Invalid=714, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 20:05:12,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-15 20:05:12,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 250. [2020-10-15 20:05:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-15 20:05:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 611 transitions. [2020-10-15 20:05:12,905 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 611 transitions. Word has length 15 [2020-10-15 20:05:12,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:12,905 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 611 transitions. [2020-10-15 20:05:12,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:12,905 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 611 transitions. [2020-10-15 20:05:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:12,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:12,905 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:13,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 285 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable291 [2020-10-15 20:05:13,106 INFO L429 AbstractCegarLoop]: === Iteration 293 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:13,107 INFO L82 PathProgramCache]: Analyzing trace with hash -2032250561, now seen corresponding path program 264 times [2020-10-15 20:05:13,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:13,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531211979] [2020-10-15 20:05:13,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:13,395 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:13,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531211979] [2020-10-15 20:05:13,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962182782] [2020-10-15 20:05:13,396 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:13,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-15 20:05:13,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:05:13,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:13,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:13,845 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:13,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:13,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:05:13,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378545565] [2020-10-15 20:05:13,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:05:13,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:13,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:05:13,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:05:13,846 INFO L87 Difference]: Start difference. First operand 250 states and 611 transitions. Second operand 19 states. [2020-10-15 20:05:14,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:14,849 INFO L93 Difference]: Finished difference Result 326 states and 755 transitions. [2020-10-15 20:05:14,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 20:05:14,851 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:14,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:14,852 INFO L225 Difference]: With dead ends: 326 [2020-10-15 20:05:14,852 INFO L226 Difference]: Without dead ends: 322 [2020-10-15 20:05:14,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2020-10-15 20:05:14,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-15 20:05:14,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 255. [2020-10-15 20:05:14,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 20:05:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 623 transitions. [2020-10-15 20:05:14,856 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 623 transitions. Word has length 15 [2020-10-15 20:05:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:14,856 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 623 transitions. [2020-10-15 20:05:14,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 623 transitions. [2020-10-15 20:05:14,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:14,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:14,857 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:15,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 286 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable292 [2020-10-15 20:05:15,058 INFO L429 AbstractCegarLoop]: === Iteration 294 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:15,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:15,058 INFO L82 PathProgramCache]: Analyzing trace with hash -2032220770, now seen corresponding path program 265 times [2020-10-15 20:05:15,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:15,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720380647] [2020-10-15 20:05:15,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:15,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720380647] [2020-10-15 20:05:15,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832168122] [2020-10-15 20:05:15,346 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:15,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:15,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:15,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:15,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:05:15,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964863139] [2020-10-15 20:05:15,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:05:15,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:15,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:05:15,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:05:15,784 INFO L87 Difference]: Start difference. First operand 255 states and 623 transitions. Second operand 19 states. [2020-10-15 20:05:16,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:16,605 INFO L93 Difference]: Finished difference Result 341 states and 782 transitions. [2020-10-15 20:05:16,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-15 20:05:16,607 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:16,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:16,608 INFO L225 Difference]: With dead ends: 341 [2020-10-15 20:05:16,608 INFO L226 Difference]: Without dead ends: 330 [2020-10-15 20:05:16,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=261, Invalid=551, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:05:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-15 20:05:16,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 251. [2020-10-15 20:05:16,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-15 20:05:16,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 615 transitions. [2020-10-15 20:05:16,612 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 615 transitions. Word has length 15 [2020-10-15 20:05:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:16,612 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 615 transitions. [2020-10-15 20:05:16,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 615 transitions. [2020-10-15 20:05:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:16,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:16,613 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:16,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293,287 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:16,813 INFO L429 AbstractCegarLoop]: === Iteration 295 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:16,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:16,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1173375070, now seen corresponding path program 266 times [2020-10-15 20:05:16,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:16,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802335259] [2020-10-15 20:05:16,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:16,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:17,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:17,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802335259] [2020-10-15 20:05:17,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366344691] [2020-10-15 20:05:17,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:17,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:05:17,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:05:17,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:17,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:17,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:17,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:05:17,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484836606] [2020-10-15 20:05:17,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:05:17,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:17,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:05:17,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:05:17,733 INFO L87 Difference]: Start difference. First operand 251 states and 615 transitions. Second operand 19 states. [2020-10-15 20:05:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:18,736 INFO L93 Difference]: Finished difference Result 325 states and 750 transitions. [2020-10-15 20:05:18,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 20:05:18,739 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:18,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:18,740 INFO L225 Difference]: With dead ends: 325 [2020-10-15 20:05:18,740 INFO L226 Difference]: Without dead ends: 313 [2020-10-15 20:05:18,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-15 20:05:18,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-10-15 20:05:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 249. [2020-10-15 20:05:18,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-10-15 20:05:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 610 transitions. [2020-10-15 20:05:18,744 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 610 transitions. Word has length 15 [2020-10-15 20:05:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:18,744 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 610 transitions. [2020-10-15 20:05:18,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 610 transitions. [2020-10-15 20:05:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:18,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:18,745 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:18,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294,288 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:18,946 INFO L429 AbstractCegarLoop]: === Iteration 296 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:18,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1173345279, now seen corresponding path program 267 times [2020-10-15 20:05:18,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:18,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265678531] [2020-10-15 20:05:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:19,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265678531] [2020-10-15 20:05:19,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028170343] [2020-10-15 20:05:19,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:19,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-15 20:05:19,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:05:19,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:19,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:21,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:21,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:21,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:05:21,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893944043] [2020-10-15 20:05:21,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:05:21,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:21,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:05:21,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:05:21,996 INFO L87 Difference]: Start difference. First operand 249 states and 610 transitions. Second operand 19 states. [2020-10-15 20:05:23,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:23,343 INFO L93 Difference]: Finished difference Result 320 states and 735 transitions. [2020-10-15 20:05:23,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:05:23,345 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:23,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:23,346 INFO L225 Difference]: With dead ends: 320 [2020-10-15 20:05:23,346 INFO L226 Difference]: Without dead ends: 307 [2020-10-15 20:05:23,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=291, Invalid=579, Unknown=0, NotChecked=0, Total=870 [2020-10-15 20:05:23,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-10-15 20:05:23,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 246. [2020-10-15 20:05:23,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-15 20:05:23,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 602 transitions. [2020-10-15 20:05:23,350 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 602 transitions. Word has length 15 [2020-10-15 20:05:23,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:23,350 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 602 transitions. [2020-10-15 20:05:23,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:23,350 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 602 transitions. [2020-10-15 20:05:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:23,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:23,351 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:23,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295,289 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:23,552 INFO L429 AbstractCegarLoop]: === Iteration 297 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:23,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:23,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1143823359, now seen corresponding path program 268 times [2020-10-15 20:05:23,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:23,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766129878] [2020-10-15 20:05:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:23,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766129878] [2020-10-15 20:05:23,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94138319] [2020-10-15 20:05:23,916 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:23,958 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:05:23,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:05:23,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:23,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:24,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:24,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:24,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:05:24,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794918694] [2020-10-15 20:05:24,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:05:24,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:24,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:05:24,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:05:24,440 INFO L87 Difference]: Start difference. First operand 246 states and 602 transitions. Second operand 19 states. [2020-10-15 20:05:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:24,944 INFO L93 Difference]: Finished difference Result 300 states and 697 transitions. [2020-10-15 20:05:24,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 20:05:24,947 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:24,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:24,948 INFO L225 Difference]: With dead ends: 300 [2020-10-15 20:05:24,948 INFO L226 Difference]: Without dead ends: 289 [2020-10-15 20:05:24,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2020-10-15 20:05:24,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-15 20:05:24,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 248. [2020-10-15 20:05:24,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-15 20:05:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 604 transitions. [2020-10-15 20:05:24,952 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 604 transitions. Word has length 15 [2020-10-15 20:05:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:24,952 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 604 transitions. [2020-10-15 20:05:24,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 604 transitions. [2020-10-15 20:05:24,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:24,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:24,953 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:25,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 290 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable296 [2020-10-15 20:05:25,154 INFO L429 AbstractCegarLoop]: === Iteration 298 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:25,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:25,154 INFO L82 PathProgramCache]: Analyzing trace with hash 439566480, now seen corresponding path program 269 times [2020-10-15 20:05:25,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:25,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160046027] [2020-10-15 20:05:25,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:25,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:25,576 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:25,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160046027] [2020-10-15 20:05:25,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385186150] [2020-10-15 20:05:25,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:25,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:05:25,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:05:25,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:25,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:26,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:26,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:26,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:05:26,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281421126] [2020-10-15 20:05:26,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:05:26,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:26,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:05:26,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:05:26,071 INFO L87 Difference]: Start difference. First operand 248 states and 604 transitions. Second operand 19 states. [2020-10-15 20:05:26,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:26,644 INFO L93 Difference]: Finished difference Result 308 states and 716 transitions. [2020-10-15 20:05:26,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 20:05:26,647 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:26,648 INFO L225 Difference]: With dead ends: 308 [2020-10-15 20:05:26,648 INFO L226 Difference]: Without dead ends: 306 [2020-10-15 20:05:26,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2020-10-15 20:05:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-10-15 20:05:26,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 254. [2020-10-15 20:05:26,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-15 20:05:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-15 20:05:26,656 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-15 20:05:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:26,656 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-15 20:05:26,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-15 20:05:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:26,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:26,657 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:26,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297,291 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:26,858 INFO L429 AbstractCegarLoop]: === Iteration 299 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:26,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:26,858 INFO L82 PathProgramCache]: Analyzing trace with hash 439595310, now seen corresponding path program 270 times [2020-10-15 20:05:26,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:26,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041887798] [2020-10-15 20:05:26,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:27,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041887798] [2020-10-15 20:05:27,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933488123] [2020-10-15 20:05:27,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:27,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:05:27,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:05:27,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:27,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:27,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:27,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:05:27,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510755782] [2020-10-15 20:05:27,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:05:27,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:27,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:05:27,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:05:27,826 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-15 20:05:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:28,701 INFO L93 Difference]: Finished difference Result 335 states and 780 transitions. [2020-10-15 20:05:28,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 20:05:28,705 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:05:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:28,705 INFO L225 Difference]: With dead ends: 335 [2020-10-15 20:05:28,706 INFO L226 Difference]: Without dead ends: 332 [2020-10-15 20:05:28,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-15 20:05:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-15 20:05:28,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 252. [2020-10-15 20:05:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-15 20:05:28,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 616 transitions. [2020-10-15 20:05:28,710 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 616 transitions. Word has length 15 [2020-10-15 20:05:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:28,710 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 616 transitions. [2020-10-15 20:05:28,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:05:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 616 transitions. [2020-10-15 20:05:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:28,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:28,711 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:28,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 292 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable298 [2020-10-15 20:05:28,912 INFO L429 AbstractCegarLoop]: === Iteration 300 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:28,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:28,913 INFO L82 PathProgramCache]: Analyzing trace with hash 440489040, now seen corresponding path program 271 times [2020-10-15 20:05:28,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:28,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695356552] [2020-10-15 20:05:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:29,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:29,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695356552] [2020-10-15 20:05:29,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922470901] [2020-10-15 20:05:29,269 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:05:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:05:29,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:05:29,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:05:39,933 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 32 [2020-10-15 20:05:39,935 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:05:39,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:05:39,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2020-10-15 20:05:39,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82361650] [2020-10-15 20:05:39,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-15 20:05:39,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:05:39,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-15 20:05:39,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=269, Unknown=4, NotChecked=0, Total=380 [2020-10-15 20:05:39,937 INFO L87 Difference]: Start difference. First operand 252 states and 616 transitions. Second operand 20 states. [2020-10-15 20:05:42,542 WARN L193 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-15 20:05:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:05:59,730 INFO L93 Difference]: Finished difference Result 340 states and 781 transitions. [2020-10-15 20:05:59,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 20:05:59,732 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 15 [2020-10-15 20:05:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:05:59,733 INFO L225 Difference]: With dead ends: 340 [2020-10-15 20:05:59,733 INFO L226 Difference]: Without dead ends: 338 [2020-10-15 20:05:59,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=310, Invalid=616, Unknown=4, NotChecked=0, Total=930 [2020-10-15 20:05:59,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-15 20:05:59,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 254. [2020-10-15 20:05:59,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-15 20:05:59,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-15 20:05:59,737 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-15 20:05:59,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:05:59,737 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-15 20:05:59,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-15 20:05:59,737 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-15 20:05:59,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:05:59,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:05:59,738 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:05:59,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 293 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable299 [2020-10-15 20:05:59,939 INFO L429 AbstractCegarLoop]: === Iteration 301 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:05:59,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:05:59,939 INFO L82 PathProgramCache]: Analyzing trace with hash 440490001, now seen corresponding path program 272 times [2020-10-15 20:05:59,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:05:59,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909866056] [2020-10-15 20:05:59,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:05:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:06:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:00,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909866056] [2020-10-15 20:06:00,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209163814] [2020-10-15 20:06:00,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:06:00,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:06:00,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:06:00,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:06:00,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:06:04,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:04,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:06:04,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:06:04,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291234759] [2020-10-15 20:06:04,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:06:04,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:06:04,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:06:04,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=251, Unknown=1, NotChecked=0, Total=342 [2020-10-15 20:06:04,935 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-15 20:06:09,349 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2020-10-15 20:06:10,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:06:10,227 INFO L93 Difference]: Finished difference Result 362 states and 839 transitions. [2020-10-15 20:06:10,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 20:06:10,230 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:06:10,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:06:10,231 INFO L225 Difference]: With dead ends: 362 [2020-10-15 20:06:10,231 INFO L226 Difference]: Without dead ends: 358 [2020-10-15 20:06:10,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=256, Invalid=555, Unknown=1, NotChecked=0, Total=812 [2020-10-15 20:06:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-10-15 20:06:10,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 254. [2020-10-15 20:06:10,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-15 20:06:10,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-15 20:06:10,235 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-15 20:06:10,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:06:10,235 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-15 20:06:10,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:06:10,235 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-15 20:06:10,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:06:10,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:06:10,235 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:06:10,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 294 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable300 [2020-10-15 20:06:10,436 INFO L429 AbstractCegarLoop]: === Iteration 302 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:06:10,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:06:10,437 INFO L82 PathProgramCache]: Analyzing trace with hash 440518831, now seen corresponding path program 273 times [2020-10-15 20:06:10,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:06:10,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191587169] [2020-10-15 20:06:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:06:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:06:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:10,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191587169] [2020-10-15 20:06:10,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778310302] [2020-10-15 20:06:10,799 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:06:10,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:06:10,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:06:10,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:06:10,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:06:11,452 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:11,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:06:11,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:06:11,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975884954] [2020-10-15 20:06:11,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:06:11,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:06:11,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:06:11,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:06:11,454 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-15 20:06:12,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:06:12,624 INFO L93 Difference]: Finished difference Result 348 states and 807 transitions. [2020-10-15 20:06:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 20:06:12,627 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:06:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:06:12,628 INFO L225 Difference]: With dead ends: 348 [2020-10-15 20:06:12,628 INFO L226 Difference]: Without dead ends: 345 [2020-10-15 20:06:12,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2020-10-15 20:06:12,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2020-10-15 20:06:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 250. [2020-10-15 20:06:12,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-15 20:06:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 610 transitions. [2020-10-15 20:06:12,632 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 610 transitions. Word has length 15 [2020-10-15 20:06:12,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:06:12,632 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 610 transitions. [2020-10-15 20:06:12,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:06:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 610 transitions. [2020-10-15 20:06:12,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:06:12,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:06:12,633 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:06:12,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 295 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable301 [2020-10-15 20:06:12,833 INFO L429 AbstractCegarLoop]: === Iteration 303 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:06:12,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:06:12,834 INFO L82 PathProgramCache]: Analyzing trace with hash 468194670, now seen corresponding path program 274 times [2020-10-15 20:06:12,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:06:12,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336281872] [2020-10-15 20:06:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:06:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:06:13,153 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:13,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336281872] [2020-10-15 20:06:13,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905271946] [2020-10-15 20:06:13,154 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:06:13,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:06:13,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:06:13,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:06:13,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:06:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:13,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:06:13,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:06:13,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708869544] [2020-10-15 20:06:13,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:06:13,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:06:13,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:06:13,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:06:13,809 INFO L87 Difference]: Start difference. First operand 250 states and 610 transitions. Second operand 19 states. [2020-10-15 20:06:15,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:06:15,273 INFO L93 Difference]: Finished difference Result 322 states and 743 transitions. [2020-10-15 20:06:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 20:06:15,276 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:06:15,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:06:15,276 INFO L225 Difference]: With dead ends: 322 [2020-10-15 20:06:15,276 INFO L226 Difference]: Without dead ends: 320 [2020-10-15 20:06:15,276 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=312, Invalid=680, Unknown=0, NotChecked=0, Total=992 [2020-10-15 20:06:15,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2020-10-15 20:06:15,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 253. [2020-10-15 20:06:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-15 20:06:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 619 transitions. [2020-10-15 20:06:15,280 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 619 transitions. Word has length 15 [2020-10-15 20:06:15,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:06:15,280 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 619 transitions. [2020-10-15 20:06:15,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:06:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 619 transitions. [2020-10-15 20:06:15,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:06:15,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:06:15,280 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:06:15,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 296 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable302 [2020-10-15 20:06:15,481 INFO L429 AbstractCegarLoop]: === Iteration 304 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:06:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:06:15,481 INFO L82 PathProgramCache]: Analyzing trace with hash 468195631, now seen corresponding path program 275 times [2020-10-15 20:06:15,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:06:15,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785305457] [2020-10-15 20:06:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:06:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:06:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:15,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785305457] [2020-10-15 20:06:15,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312354466] [2020-10-15 20:06:15,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:06:15,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:06:15,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:06:15,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:06:15,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:06:16,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:16,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:06:16,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:06:16,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955856912] [2020-10-15 20:06:16,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:06:16,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:06:16,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:06:16,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:06:16,419 INFO L87 Difference]: Start difference. First operand 253 states and 619 transitions. Second operand 19 states. [2020-10-15 20:06:17,354 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-15 20:06:17,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:06:17,819 INFO L93 Difference]: Finished difference Result 356 states and 822 transitions. [2020-10-15 20:06:17,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 20:06:17,822 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:06:17,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:06:17,823 INFO L225 Difference]: With dead ends: 356 [2020-10-15 20:06:17,823 INFO L226 Difference]: Without dead ends: 352 [2020-10-15 20:06:17,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=291, Invalid=639, Unknown=0, NotChecked=0, Total=930 [2020-10-15 20:06:17,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2020-10-15 20:06:17,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 253. [2020-10-15 20:06:17,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 253 states. [2020-10-15 20:06:17,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 619 transitions. [2020-10-15 20:06:17,827 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 619 transitions. Word has length 15 [2020-10-15 20:06:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:06:17,827 INFO L481 AbstractCegarLoop]: Abstraction has 253 states and 619 transitions. [2020-10-15 20:06:17,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:06:17,827 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 619 transitions. [2020-10-15 20:06:17,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:06:17,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:06:17,827 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:06:18,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 297 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable303 [2020-10-15 20:06:18,028 INFO L429 AbstractCegarLoop]: === Iteration 305 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:06:18,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:06:18,029 INFO L82 PathProgramCache]: Analyzing trace with hash 468224461, now seen corresponding path program 276 times [2020-10-15 20:06:18,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:06:18,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875923141] [2020-10-15 20:06:18,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:06:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:06:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:18,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875923141] [2020-10-15 20:06:18,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250443770] [2020-10-15 20:06:18,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:06:18,395 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:06:18,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:06:18,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:06:18,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:06:31,395 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-15 20:06:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:37,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:06:37,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:06:37,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165717643] [2020-10-15 20:06:37,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:06:37,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:06:37,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:06:37,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=251, Unknown=2, NotChecked=0, Total=342 [2020-10-15 20:06:37,580 INFO L87 Difference]: Start difference. First operand 253 states and 619 transitions. Second operand 19 states. [2020-10-15 20:06:42,029 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-15 20:06:58,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:06:58,572 INFO L93 Difference]: Finished difference Result 372 states and 857 transitions. [2020-10-15 20:06:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-15 20:06:58,575 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:06:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:06:58,576 INFO L225 Difference]: With dead ends: 372 [2020-10-15 20:06:58,576 INFO L226 Difference]: Without dead ends: 368 [2020-10-15 20:06:58,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 31.5s TimeCoverageRelationStatistics Valid=278, Invalid=588, Unknown=4, NotChecked=0, Total=870 [2020-10-15 20:06:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-10-15 20:06:58,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 254. [2020-10-15 20:06:58,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-15 20:06:58,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 622 transitions. [2020-10-15 20:06:58,581 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 622 transitions. Word has length 15 [2020-10-15 20:06:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:06:58,586 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 622 transitions. [2020-10-15 20:06:58,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:06:58,586 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 622 transitions. [2020-10-15 20:06:58,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:06:58,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:06:58,587 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:06:58,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 298 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable304 [2020-10-15 20:06:58,788 INFO L429 AbstractCegarLoop]: === Iteration 306 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:06:58,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:06:58,788 INFO L82 PathProgramCache]: Analyzing trace with hash 469119152, now seen corresponding path program 277 times [2020-10-15 20:06:58,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:06:58,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916484347] [2020-10-15 20:06:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:06:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:06:59,129 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:06:59,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916484347] [2020-10-15 20:06:59,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717618342] [2020-10-15 20:06:59,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:06:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:06:59,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:06:59,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:01,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:01,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:07:01,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:07:01,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088394462] [2020-10-15 20:07:01,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:07:01,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:07:01,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:07:01,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:07:01,839 INFO L87 Difference]: Start difference. First operand 254 states and 622 transitions. Second operand 19 states. [2020-10-15 20:07:03,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:07:03,501 INFO L93 Difference]: Finished difference Result 370 states and 850 transitions. [2020-10-15 20:07:03,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 20:07:03,504 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:07:03,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:07:03,505 INFO L225 Difference]: With dead ends: 370 [2020-10-15 20:07:03,505 INFO L226 Difference]: Without dead ends: 354 [2020-10-15 20:07:03,505 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=310, Invalid=682, Unknown=0, NotChecked=0, Total=992 [2020-10-15 20:07:03,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-10-15 20:07:03,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 248. [2020-10-15 20:07:03,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-15 20:07:03,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 604 transitions. [2020-10-15 20:07:03,508 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 604 transitions. Word has length 15 [2020-10-15 20:07:03,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:07:03,508 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 604 transitions. [2020-10-15 20:07:03,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:07:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 604 transitions. [2020-10-15 20:07:03,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:07:03,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:07:03,509 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:07:03,709 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305,299 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:03,709 INFO L429 AbstractCegarLoop]: === Iteration 307 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:07:03,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:07:03,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1327069200, now seen corresponding path program 278 times [2020-10-15 20:07:03,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:07:03,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316064794] [2020-10-15 20:07:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:07:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:07:04,005 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:04,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316064794] [2020-10-15 20:07:04,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062398274] [2020-10-15 20:07:04,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:04,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:07:04,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:07:04,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:07:04,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:04,550 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:04,550 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:07:04,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:07:04,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434294189] [2020-10-15 20:07:04,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:07:04,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:07:04,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:07:04,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:07:04,551 INFO L87 Difference]: Start difference. First operand 248 states and 604 transitions. Second operand 19 states. [2020-10-15 20:07:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:07:05,985 INFO L93 Difference]: Finished difference Result 311 states and 720 transitions. [2020-10-15 20:07:05,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 20:07:05,988 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:07:05,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:07:05,989 INFO L225 Difference]: With dead ends: 311 [2020-10-15 20:07:05,989 INFO L226 Difference]: Without dead ends: 309 [2020-10-15 20:07:05,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=361, Invalid=829, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 20:07:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-15 20:07:05,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 252. [2020-10-15 20:07:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-15 20:07:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 615 transitions. [2020-10-15 20:07:05,994 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 615 transitions. Word has length 15 [2020-10-15 20:07:05,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:07:05,995 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 615 transitions. [2020-10-15 20:07:05,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:07:05,995 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 615 transitions. [2020-10-15 20:07:05,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:07:05,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:07:05,995 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:07:06,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 300 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable306 [2020-10-15 20:07:06,207 INFO L429 AbstractCegarLoop]: === Iteration 308 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:07:06,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:07:06,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1327070161, now seen corresponding path program 279 times [2020-10-15 20:07:06,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:07:06,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112721947] [2020-10-15 20:07:06,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:07:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:07:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:06,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112721947] [2020-10-15 20:07:06,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339579162] [2020-10-15 20:07:06,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:06,539 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:07:06,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:07:06,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:07:06,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:07,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:07,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:07:07,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:07:07,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076098114] [2020-10-15 20:07:07,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:07:07,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:07:07,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:07:07,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:07:07,048 INFO L87 Difference]: Start difference. First operand 252 states and 615 transitions. Second operand 19 states. [2020-10-15 20:07:08,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:07:08,505 INFO L93 Difference]: Finished difference Result 338 states and 777 transitions. [2020-10-15 20:07:08,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 20:07:08,509 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:07:08,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:07:08,510 INFO L225 Difference]: With dead ends: 338 [2020-10-15 20:07:08,510 INFO L226 Difference]: Without dead ends: 335 [2020-10-15 20:07:08,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=333, Invalid=789, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 20:07:08,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-10-15 20:07:08,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 251. [2020-10-15 20:07:08,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-15 20:07:08,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 612 transitions. [2020-10-15 20:07:08,515 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 612 transitions. Word has length 15 [2020-10-15 20:07:08,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:07:08,516 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 612 transitions. [2020-10-15 20:07:08,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:07:08,516 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 612 transitions. [2020-10-15 20:07:08,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:07:08,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:07:08,516 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:07:08,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307,301 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:08,722 INFO L429 AbstractCegarLoop]: === Iteration 309 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:07:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:07:08,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1327098991, now seen corresponding path program 280 times [2020-10-15 20:07:08,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:07:08,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894156607] [2020-10-15 20:07:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:07:08,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:07:09,020 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:09,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894156607] [2020-10-15 20:07:09,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242925546] [2020-10-15 20:07:09,021 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:09,063 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-15 20:07:09,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:07:09,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:07:09,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:11,833 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:11,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:07:11,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:07:11,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827643789] [2020-10-15 20:07:11,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:07:11,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:07:11,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:07:11,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:07:11,834 INFO L87 Difference]: Start difference. First operand 251 states and 612 transitions. Second operand 19 states. [2020-10-15 20:07:13,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:07:13,286 INFO L93 Difference]: Finished difference Result 345 states and 795 transitions. [2020-10-15 20:07:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 20:07:13,289 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:07:13,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:07:13,290 INFO L225 Difference]: With dead ends: 345 [2020-10-15 20:07:13,290 INFO L226 Difference]: Without dead ends: 341 [2020-10-15 20:07:13,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=327, Invalid=729, Unknown=0, NotChecked=0, Total=1056 [2020-10-15 20:07:13,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-15 20:07:13,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 250. [2020-10-15 20:07:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-15 20:07:13,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 609 transitions. [2020-10-15 20:07:13,295 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 609 transitions. Word has length 15 [2020-10-15 20:07:13,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:07:13,295 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 609 transitions. [2020-10-15 20:07:13,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:07:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 609 transitions. [2020-10-15 20:07:13,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:07:13,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:07:13,296 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:07:13,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308,302 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:13,496 INFO L429 AbstractCegarLoop]: === Iteration 310 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:07:13,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:07:13,497 INFO L82 PathProgramCache]: Analyzing trace with hash 1327992721, now seen corresponding path program 281 times [2020-10-15 20:07:13,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:07:13,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628043333] [2020-10-15 20:07:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:07:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:07:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:13,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628043333] [2020-10-15 20:07:13,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758938683] [2020-10-15 20:07:13,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:13,843 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-15 20:07:13,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:07:13,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:07:13,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:14,340 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:14,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:07:14,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:07:14,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142102355] [2020-10-15 20:07:14,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:07:14,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:07:14,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:07:14,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:07:14,342 INFO L87 Difference]: Start difference. First operand 250 states and 609 transitions. Second operand 19 states. [2020-10-15 20:07:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:07:15,709 INFO L93 Difference]: Finished difference Result 354 states and 811 transitions. [2020-10-15 20:07:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-15 20:07:15,712 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:07:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:07:15,713 INFO L225 Difference]: With dead ends: 354 [2020-10-15 20:07:15,713 INFO L226 Difference]: Without dead ends: 350 [2020-10-15 20:07:15,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=347, Invalid=775, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 20:07:15,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-10-15 20:07:15,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 255. [2020-10-15 20:07:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-15 20:07:15,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 622 transitions. [2020-10-15 20:07:15,720 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 622 transitions. Word has length 15 [2020-10-15 20:07:15,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:07:15,720 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 622 transitions. [2020-10-15 20:07:15,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:07:15,721 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 622 transitions. [2020-10-15 20:07:15,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:07:15,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:07:15,722 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:07:15,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309,303 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:15,933 INFO L429 AbstractCegarLoop]: === Iteration 311 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:07:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:07:15,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1327993682, now seen corresponding path program 282 times [2020-10-15 20:07:15,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:07:15,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775967501] [2020-10-15 20:07:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:07:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:07:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:16,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775967501] [2020-10-15 20:07:16,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94263822] [2020-10-15 20:07:16,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:16,280 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-15 20:07:16,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:07:16,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:07:16,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:16,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:16,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:07:16,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:07:16,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11131017] [2020-10-15 20:07:16,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:07:16,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:07:16,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:07:16,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:07:16,768 INFO L87 Difference]: Start difference. First operand 255 states and 622 transitions. Second operand 19 states. [2020-10-15 20:07:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:07:17,891 INFO L93 Difference]: Finished difference Result 356 states and 815 transitions. [2020-10-15 20:07:17,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 20:07:17,894 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:07:17,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:07:17,895 INFO L225 Difference]: With dead ends: 356 [2020-10-15 20:07:17,895 INFO L226 Difference]: Without dead ends: 341 [2020-10-15 20:07:17,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=283, Invalid=647, Unknown=0, NotChecked=0, Total=930 [2020-10-15 20:07:17,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-10-15 20:07:17,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 256. [2020-10-15 20:07:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-10-15 20:07:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 622 transitions. [2020-10-15 20:07:17,903 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 622 transitions. Word has length 15 [2020-10-15 20:07:17,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:07:17,903 INFO L481 AbstractCegarLoop]: Abstraction has 256 states and 622 transitions. [2020-10-15 20:07:17,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:07:17,903 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 622 transitions. [2020-10-15 20:07:17,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:07:17,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:07:17,903 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:07:18,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 304 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable310 [2020-10-15 20:07:18,104 INFO L429 AbstractCegarLoop]: === Iteration 312 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:07:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:07:18,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1328022512, now seen corresponding path program 283 times [2020-10-15 20:07:18,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:07:18,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137812899] [2020-10-15 20:07:18,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:07:18,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:07:18,409 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:18,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137812899] [2020-10-15 20:07:18,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957008196] [2020-10-15 20:07:18,409 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:07:18,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:07:18,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:18,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:18,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:07:18,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:07:18,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666851223] [2020-10-15 20:07:18,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:07:18,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:07:18,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:07:18,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:07:18,968 INFO L87 Difference]: Start difference. First operand 256 states and 622 transitions. Second operand 19 states. [2020-10-15 20:07:20,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:07:20,466 INFO L93 Difference]: Finished difference Result 348 states and 796 transitions. [2020-10-15 20:07:20,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-15 20:07:20,470 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:07:20,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:07:20,471 INFO L225 Difference]: With dead ends: 348 [2020-10-15 20:07:20,471 INFO L226 Difference]: Without dead ends: 337 [2020-10-15 20:07:20,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=366, Invalid=824, Unknown=0, NotChecked=0, Total=1190 [2020-10-15 20:07:20,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-15 20:07:20,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 252. [2020-10-15 20:07:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-15 20:07:20,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 614 transitions. [2020-10-15 20:07:20,475 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 614 transitions. Word has length 15 [2020-10-15 20:07:20,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:07:20,475 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 614 transitions. [2020-10-15 20:07:20,475 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:07:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 614 transitions. [2020-10-15 20:07:20,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:07:20,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:07:20,476 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 20:07:20,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 305 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable311 [2020-10-15 20:07:20,676 INFO L429 AbstractCegarLoop]: === Iteration 313 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:07:20,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:07:20,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1355699312, now seen corresponding path program 284 times [2020-10-15 20:07:20,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:07:20,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590269553] [2020-10-15 20:07:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:07:20,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 20:07:20,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:20,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590269553] [2020-10-15 20:07:20,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562422097] [2020-10-15 20:07:20,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:21,017 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 20:07:21,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:07:21,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:07:21,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 20:07:21,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 20:07:21,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2020-10-15 20:07:21,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837942692] [2020-10-15 20:07:21,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-15 20:07:21,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 20:07:21,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-15 20:07:21,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-15 20:07:21,693 INFO L87 Difference]: Start difference. First operand 252 states and 614 transitions. Second operand 19 states. [2020-10-15 20:07:23,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 20:07:23,735 INFO L93 Difference]: Finished difference Result 344 states and 788 transitions. [2020-10-15 20:07:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-15 20:07:23,738 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-10-15 20:07:23,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 20:07:23,739 INFO L225 Difference]: With dead ends: 344 [2020-10-15 20:07:23,739 INFO L226 Difference]: Without dead ends: 331 [2020-10-15 20:07:23,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=378, Invalid=882, Unknown=0, NotChecked=0, Total=1260 [2020-10-15 20:07:23,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-10-15 20:07:23,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 252. [2020-10-15 20:07:23,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-15 20:07:23,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 612 transitions. [2020-10-15 20:07:23,744 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 612 transitions. Word has length 15 [2020-10-15 20:07:23,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 20:07:23,744 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 612 transitions. [2020-10-15 20:07:23,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-15 20:07:23,744 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 612 transitions. [2020-10-15 20:07:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 20:07:23,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 20:07:23,744 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] Received shutdown request... [2020-10-15 20:07:23,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 306 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable312 [2020-10-15 20:07:23,945 INFO L429 AbstractCegarLoop]: === Iteration 314 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 20:07:23,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 20:07:23,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1355728142, now seen corresponding path program 285 times [2020-10-15 20:07:23,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 20:07:23,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797967076] [2020-10-15 20:07:23,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 20:07:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2020-10-15 20:07:23,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953212393] [2020-10-15 20:07:23,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 20:07:23,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-15 20:07:23,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 20:07:23,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-15 20:07:23,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 20:07:23,994 WARN L210 SmtUtils]: Removed 1 from assertion stack [2020-10-15 20:07:24,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 307 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable313 [2020-10-15 20:07:24,195 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-15 20:07:24,199 WARN L235 ceAbstractionStarter]: Timeout [2020-10-15 20:07:24,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 08:07:24 BasicIcfg [2020-10-15 20:07:24,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 20:07:24,200 INFO L168 Benchmark]: Toolchain (without parser) took 874059.07 ms. Allocated memory was 253.2 MB in the beginning and 235.4 MB in the end (delta: -17.8 MB). Free memory was 208.9 MB in the beginning and 149.5 MB in the end (delta: 59.4 MB). Peak memory consumption was 41.6 MB. Max. memory is 14.2 GB. [2020-10-15 20:07:24,201 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:07:24,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 738.43 ms. Allocated memory was 253.2 MB in the beginning and 322.4 MB in the end (delta: 69.2 MB). Free memory was 208.9 MB in the beginning and 277.7 MB in the end (delta: -68.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 14.2 GB. [2020-10-15 20:07:24,201 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.38 ms. Allocated memory is still 322.4 MB. Free memory is still 277.7 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-15 20:07:24,201 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 ms. Allocated memory is still 322.4 MB. Free memory was 277.7 MB in the beginning and 275.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-15 20:07:24,202 INFO L168 Benchmark]: RCFGBuilder took 451.10 ms. Allocated memory is still 322.4 MB. Free memory was 275.2 MB in the beginning and 253.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. [2020-10-15 20:07:24,202 INFO L168 Benchmark]: TraceAbstraction took 872788.46 ms. Allocated memory was 322.4 MB in the beginning and 235.4 MB in the end (delta: -87.0 MB). Free memory was 253.4 MB in the beginning and 149.5 MB in the end (delta: 103.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.2 GB. [2020-10-15 20:07:24,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 253.2 MB. Free memory is still 229.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 738.43 ms. Allocated memory was 253.2 MB in the beginning and 322.4 MB in the end (delta: 69.2 MB). Free memory was 208.9 MB in the beginning and 277.7 MB in the end (delta: -68.8 MB). Peak memory consumption was 30.8 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 46.38 ms. Allocated memory is still 322.4 MB. Free memory is still 277.7 MB. There was no memory consumed. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.61 ms. Allocated memory is still 322.4 MB. Free memory was 277.7 MB in the beginning and 275.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * RCFGBuilder took 451.10 ms. Allocated memory is still 322.4 MB. Free memory was 275.2 MB in the beginning and 253.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 872788.46 ms. Allocated memory was 322.4 MB in the beginning and 235.4 MB in the end (delta: -87.0 MB). Free memory was 253.4 MB in the beginning and 149.5 MB in the end (delta: 103.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 697 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 12 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 20 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.1s, 59 PlacesBefore, 20 PlacesAfterwards, 57 TransitionsBefore, 16 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 5 FixpointIterations, 12 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 50 TotalNumberOfCompositions, 943 MoverChecksTotal - TimeoutResultAtElement [Line: 711]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 711). Cancelled while BasicCegarLoop was analyzing trace of length 16 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 6 for 0ms.. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 872.6s, OverallIterations: 314, TraceHistogramMax: 6, AutomataDifference: 541.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.2s, HoareTripleCheckerStatistics: 4263 SDtfs, 33064 SDslu, 32153 SDs, 0 SdLazy, 23406 SolverSat, 10141 SolverUnsat, 60 SolverUnknown, 0 SolverNotchecked, 150.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9328 GetRequests, 1536 SyntacticMatches, 289 SemanticMatches, 7503 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 52325 ImplicationChecksByTransitivity, 610.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=215, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 313 MinimizatonAttempts, 20926 StatesRemovedByMinimization, 312 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.7s SsaConstructionTime, 4.8s SatisfiabilityAnalysisTime, 250.0s InterpolantComputationTime, 8212 NumberOfCodeBlocks, 8210 NumberOfCodeBlocksAsserted, 990 NumberOfCheckSat, 7594 ConstructedInterpolants, 55 QuantifiedInterpolants, 885661 SizeOfPredicates, 303 NumberOfNonLiveVariables, 27647 ConjunctsInSsa, 3183 ConjunctsInUnsatCore, 618 InterpolantComputations, 10 PerfectInterpolantSequences, 30/3730 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown