/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread/fib_bench_longer-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 10:46:39,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 10:46:39,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 10:46:39,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 10:46:39,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 10:46:39,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 10:46:39,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 10:46:39,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 10:46:39,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 10:46:39,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 10:46:39,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 10:46:39,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 10:46:39,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 10:46:39,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 10:46:39,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 10:46:39,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 10:46:39,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 10:46:39,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 10:46:39,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 10:46:39,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 10:46:39,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 10:46:39,733 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 10:46:39,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 10:46:39,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 10:46:39,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 10:46:39,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 10:46:39,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 10:46:39,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 10:46:39,752 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 10:46:39,753 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 10:46:39,754 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 10:46:39,756 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 10:46:39,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 10:46:39,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 10:46:39,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 10:46:39,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 10:46:39,761 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 10:46:39,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 10:46:39,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 10:46:39,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 10:46:39,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 10:46:39,768 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-16 10:46:39,809 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 10:46:39,810 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 10:46:39,814 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 10:46:39,814 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 10:46:39,814 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 10:46:39,814 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 10:46:39,815 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 10:46:39,815 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 10:46:39,815 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 10:46:39,815 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 10:46:39,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 10:46:39,817 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 10:46:39,817 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 10:46:39,817 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 10:46:39,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 10:46:39,818 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 10:46:39,818 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 10:46:39,818 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 10:46:39,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 10:46:39,819 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 10:46:39,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 10:46:39,819 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 10:46:39,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 10:46:39,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 10:46:39,820 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 10:46:39,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 10:46:39,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 10:46:39,821 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 10:46:39,821 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 10:46:39,821 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 10:46:40,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 10:46:40,114 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 10:46:40,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 10:46:40,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 10:46:40,119 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 10:46:40,120 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longer-1.i [2020-10-16 10:46:40,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e47cd396/691d7f9e8a7c47bfa8a8e7bb5ccc9c21/FLAG6512875e6 [2020-10-16 10:46:40,722 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 10:46:40,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread/fib_bench_longer-1.i [2020-10-16 10:46:40,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e47cd396/691d7f9e8a7c47bfa8a8e7bb5ccc9c21/FLAG6512875e6 [2020-10-16 10:46:41,044 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1e47cd396/691d7f9e8a7c47bfa8a8e7bb5ccc9c21 [2020-10-16 10:46:41,053 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 10:46:41,055 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 10:46:41,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 10:46:41,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 10:46:41,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 10:46:41,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa5cb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41, skipping insertion in model container [2020-10-16 10:46:41,065 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 10:46:41,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 10:46:41,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:46:41,664 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 10:46:41,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 10:46:41,825 INFO L208 MainTranslator]: Completed translation [2020-10-16 10:46:41,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41 WrapperNode [2020-10-16 10:46:41,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 10:46:41,829 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 10:46:41,829 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 10:46:41,829 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 10:46:41,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 10:46:41,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 10:46:41,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 10:46:41,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 10:46:41,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... [2020-10-16 10:46:41,911 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 10:46:41,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 10:46:41,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 10:46:41,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 10:46:41,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-16 10:46:41,972 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-16 10:46:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-16 10:46:41,972 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-16 10:46:41,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 10:46:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 10:46:41,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 10:46:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 10:46:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 10:46:41,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 10:46:41,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 10:46:41,976 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 10:46:42,313 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 10:46:42,313 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-16 10:46:42,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:46:42 BoogieIcfgContainer [2020-10-16 10:46:42,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 10:46:42,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 10:46:42,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 10:46:42,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 10:46:42,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 10:46:41" (1/3) ... [2020-10-16 10:46:42,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4753b1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:46:42, skipping insertion in model container [2020-10-16 10:46:42,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 10:46:41" (2/3) ... [2020-10-16 10:46:42,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4753b1af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 10:46:42, skipping insertion in model container [2020-10-16 10:46:42,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 10:46:42" (3/3) ... [2020-10-16 10:46:42,325 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_bench_longer-1.i [2020-10-16 10:46:42,339 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 10:46:42,339 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 10:46:42,348 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 10:46:42,349 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 10:46:42,379 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,380 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,380 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,380 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,381 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,381 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,381 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,382 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,382 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,382 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,383 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,383 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,383 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,384 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,384 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,385 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,385 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,385 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,385 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,386 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,386 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,386 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,387 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,387 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,387 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,388 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,388 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,388 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,389 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,389 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,393 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,393 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,394 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,394 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,394 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,395 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,401 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,401 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,402 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,402 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,402 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,403 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 10:46:42,405 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 10:46:42,419 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 10:46:42,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 10:46:42,441 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 10:46:42,441 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 10:46:42,441 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 10:46:42,441 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 10:46:42,441 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 10:46:42,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 10:46:42,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 10:46:42,453 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 10:46:42,455 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-16 10:46:42,458 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-16 10:46:42,459 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-16 10:46:42,502 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 10:46:42,502 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 10:46:42,509 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. [2020-10-16 10:46:42,512 INFO L117 LiptonReduction]: Number of co-enabled transitions 1032 [2020-10-16 10:46:43,634 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-16 10:46:43,728 INFO L132 LiptonReduction]: Checked pairs total: 943 [2020-10-16 10:46:43,729 INFO L134 LiptonReduction]: Total number of compositions: 50 [2020-10-16 10:46:43,737 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-16 10:46:43,750 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-16 10:46:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-16 10:46:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-16 10:46:43,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:43,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-16 10:46:43,762 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:43,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:43,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1506398721, now seen corresponding path program 1 times [2020-10-16 10:46:43,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:43,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43146985] [2020-10-16 10:46:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:44,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43146985] [2020-10-16 10:46:44,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:46:44,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 10:46:44,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922567358] [2020-10-16 10:46:44,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 10:46:44,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:44,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 10:46:44,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 10:46:44,039 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-16 10:46:44,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:44,129 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-16 10:46:44,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 10:46:44,131 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-16 10:46:44,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:44,145 INFO L225 Difference]: With dead ends: 83 [2020-10-16 10:46:44,146 INFO L226 Difference]: Without dead ends: 54 [2020-10-16 10:46:44,147 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 [2020-10-16 10:46:44,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-16 10:46:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-16 10:46:44,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-16 10:46:44,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-16 10:46:44,193 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-16 10:46:44,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:44,194 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-16 10:46:44,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 10:46:44,194 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-16 10:46:44,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 10:46:44,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:44,196 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:44,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 10:46:44,196 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:44,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:44,197 INFO L82 PathProgramCache]: Analyzing trace with hash 235327157, now seen corresponding path program 1 times [2020-10-16 10:46:44,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:44,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599285765] [2020-10-16 10:46:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:44,300 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599285765] [2020-10-16 10:46:44,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:46:44,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:46:44,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676254934] [2020-10-16 10:46:44,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 10:46:44,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:44,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 10:46:44,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 10:46:44,304 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-16 10:46:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:44,357 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-16 10:46:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 10:46:44,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-16 10:46:44,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:44,360 INFO L225 Difference]: With dead ends: 80 [2020-10-16 10:46:44,360 INFO L226 Difference]: Without dead ends: 75 [2020-10-16 10:46:44,361 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 [2020-10-16 10:46:44,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-16 10:46:44,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-16 10:46:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-16 10:46:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-16 10:46:44,371 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-16 10:46:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:44,373 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-16 10:46:44,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 10:46:44,373 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-16 10:46:44,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 10:46:44,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:44,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:44,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 10:46:44,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:44,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:44,375 INFO L82 PathProgramCache]: Analyzing trace with hash -244746376, now seen corresponding path program 1 times [2020-10-16 10:46:44,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:44,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263067379] [2020-10-16 10:46:44,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:44,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263067379] [2020-10-16 10:46:44,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:46:44,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:46:44,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252893727] [2020-10-16 10:46:44,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 10:46:44,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:44,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 10:46:44,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 10:46:44,456 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-16 10:46:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:44,484 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-16 10:46:44,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 10:46:44,484 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-16 10:46:44,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:44,486 INFO L225 Difference]: With dead ends: 73 [2020-10-16 10:46:44,486 INFO L226 Difference]: Without dead ends: 70 [2020-10-16 10:46:44,486 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 [2020-10-16 10:46:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-16 10:46:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-16 10:46:44,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-16 10:46:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-16 10:46:44,495 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-16 10:46:44,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:44,496 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-16 10:46:44,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 10:46:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-16 10:46:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 10:46:44,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:44,497 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:44,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 10:46:44,498 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:44,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:44,498 INFO L82 PathProgramCache]: Analyzing trace with hash -244724056, now seen corresponding path program 2 times [2020-10-16 10:46:44,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:44,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923327386] [2020-10-16 10:46:44,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:44,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923327386] [2020-10-16 10:46:44,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:46:44,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 10:46:44,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788442022] [2020-10-16 10:46:44,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 10:46:44,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:44,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 10:46:44,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 10:46:44,560 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-16 10:46:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:44,622 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-16 10:46:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 10:46:44,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-16 10:46:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:44,624 INFO L225 Difference]: With dead ends: 86 [2020-10-16 10:46:44,624 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 10:46:44,625 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 [2020-10-16 10:46:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 10:46:44,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-16 10:46:44,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 10:46:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-16 10:46:44,634 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-16 10:46:44,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:44,634 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-16 10:46:44,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 10:46:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-16 10:46:44,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 10:46:44,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:44,636 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:44,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 10:46:44,636 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:44,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:44,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1294770680, now seen corresponding path program 2 times [2020-10-16 10:46:44,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:44,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99583749] [2020-10-16 10:46:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:44,722 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:44,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99583749] [2020-10-16 10:46:44,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840919279] [2020-10-16 10:46:44,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:44,781 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:46:44,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:44,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 10:46:44,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:44,857 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:46:44,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:44,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:44,884 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-16 10:46:44,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900818972] [2020-10-16 10:46:44,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 10:46:44,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:44,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 10:46:44,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-16 10:46:44,886 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-16 10:46:44,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:44,963 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-16 10:46:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:46:44,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-16 10:46:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:44,965 INFO L225 Difference]: With dead ends: 101 [2020-10-16 10:46:44,965 INFO L226 Difference]: Without dead ends: 96 [2020-10-16 10:46:44,965 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 [2020-10-16 10:46:44,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-16 10:46:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-16 10:46:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-16 10:46:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-16 10:46:44,974 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-16 10:46:44,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:44,975 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-16 10:46:44,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 10:46:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-16 10:46:44,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 10:46:44,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:44,976 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:45,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:45,189 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:45,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:45,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1002797622, now seen corresponding path program 3 times [2020-10-16 10:46:45,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:45,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975316547] [2020-10-16 10:46:45,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:45,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:45,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975316547] [2020-10-16 10:46:45,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809215259] [2020-10-16 10:46:45,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:45,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:46:45,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:45,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 10:46:45,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:45,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:45,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:45,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-16 10:46:45,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983208552] [2020-10-16 10:46:45,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 10:46:45,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:45,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 10:46:45,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-16 10:46:45,443 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-16 10:46:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:45,470 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-16 10:46:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 10:46:45,471 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-16 10:46:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:45,472 INFO L225 Difference]: With dead ends: 84 [2020-10-16 10:46:45,472 INFO L226 Difference]: Without dead ends: 81 [2020-10-16 10:46:45,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-16 10:46:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-16 10:46:45,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-16 10:46:45,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-16 10:46:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-16 10:46:45,489 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-16 10:46:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:45,489 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-16 10:46:45,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 10:46:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-16 10:46:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 10:46:45,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:45,491 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:45,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:45,703 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:45,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:45,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1003489542, now seen corresponding path program 4 times [2020-10-16 10:46:45,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:45,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058613454] [2020-10-16 10:46:45,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:45,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:45,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058613454] [2020-10-16 10:46:45,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119236569] [2020-10-16 10:46:45,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:45,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:46:45,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:45,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 10:46:45,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:45,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:45,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:45,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-16 10:46:45,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938789520] [2020-10-16 10:46:45,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 10:46:45,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:45,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 10:46:45,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-16 10:46:45,916 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-16 10:46:45,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:45,972 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-16 10:46:45,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 10:46:45,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-16 10:46:45,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:45,974 INFO L225 Difference]: With dead ends: 90 [2020-10-16 10:46:45,974 INFO L226 Difference]: Without dead ends: 87 [2020-10-16 10:46:45,975 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 [2020-10-16 10:46:45,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-16 10:46:45,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-16 10:46:45,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-16 10:46:45,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-16 10:46:45,982 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-16 10:46:45,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:45,982 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-16 10:46:45,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 10:46:45,983 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-16 10:46:45,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 10:46:45,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:45,984 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:46,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:46,198 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:46,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:46,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1003511862, now seen corresponding path program 5 times [2020-10-16 10:46:46,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:46,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435403759] [2020-10-16 10:46:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:46,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:46,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435403759] [2020-10-16 10:46:46,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394273967] [2020-10-16 10:46:46,250 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:46,307 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:46:46,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:46,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-16 10:46:46,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:46,380 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:46:46,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:46,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:46,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-16 10:46:46,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444561987] [2020-10-16 10:46:46,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 10:46:46,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:46,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 10:46:46,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-16 10:46:46,394 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-16 10:46:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:46,487 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-16 10:46:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:46:46,488 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-16 10:46:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:46,489 INFO L225 Difference]: With dead ends: 99 [2020-10-16 10:46:46,489 INFO L226 Difference]: Without dead ends: 93 [2020-10-16 10:46:46,490 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 [2020-10-16 10:46:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-16 10:46:46,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-16 10:46:46,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-16 10:46:46,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-16 10:46:46,496 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-16 10:46:46,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:46,497 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-16 10:46:46,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 10:46:46,497 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-16 10:46:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:46,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:46,498 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:46,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:46,704 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:46,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:46,705 INFO L82 PathProgramCache]: Analyzing trace with hash -1491235988, now seen corresponding path program 1 times [2020-10-16 10:46:46,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:46,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120857255] [2020-10-16 10:46:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:46,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120857255] [2020-10-16 10:46:46,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:46:46,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:46:46,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400594941] [2020-10-16 10:46:46,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 10:46:46,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:46,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 10:46:46,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-16 10:46:46,780 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-16 10:46:46,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:46,808 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-16 10:46:46,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 10:46:46,808 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-16 10:46:46,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:46,809 INFO L225 Difference]: With dead ends: 92 [2020-10-16 10:46:46,810 INFO L226 Difference]: Without dead ends: 90 [2020-10-16 10:46:46,810 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 [2020-10-16 10:46:46,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-16 10:46:46,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-16 10:46:46,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-16 10:46:46,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-16 10:46:46,825 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-16 10:46:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:46,826 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-16 10:46:46,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 10:46:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-16 10:46:46,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:46,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:46,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:46,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 10:46:46,828 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:46,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:46,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1490572898, now seen corresponding path program 2 times [2020-10-16 10:46:46,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:46,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678627947] [2020-10-16 10:46:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:46,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678627947] [2020-10-16 10:46:46,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:46:46,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:46:46,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290702336] [2020-10-16 10:46:46,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 10:46:46,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:46,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 10:46:46,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 10:46:46,901 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-16 10:46:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:46,948 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-16 10:46:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 10:46:46,949 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-16 10:46:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:46,950 INFO L225 Difference]: With dead ends: 100 [2020-10-16 10:46:46,950 INFO L226 Difference]: Without dead ends: 98 [2020-10-16 10:46:46,951 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 [2020-10-16 10:46:46,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-16 10:46:46,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-16 10:46:46,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-16 10:46:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-16 10:46:46,963 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-16 10:46:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:46,964 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-16 10:46:46,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 10:46:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-16 10:46:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:46,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:46,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:46,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 10:46:46,965 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:46,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:46,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1490550578, now seen corresponding path program 3 times [2020-10-16 10:46:46,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:46,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102489557] [2020-10-16 10:46:46,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:46,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:47,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:47,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102489557] [2020-10-16 10:46:47,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:46:47,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:46:47,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37896396] [2020-10-16 10:46:47,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 10:46:47,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:47,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 10:46:47,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 10:46:47,031 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-16 10:46:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:47,112 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-16 10:46:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:46:47,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-16 10:46:47,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:47,114 INFO L225 Difference]: With dead ends: 105 [2020-10-16 10:46:47,115 INFO L226 Difference]: Without dead ends: 100 [2020-10-16 10:46:47,115 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 [2020-10-16 10:46:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-16 10:46:47,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-16 10:46:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 10:46:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-16 10:46:47,121 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-16 10:46:47,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:47,121 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-16 10:46:47,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 10:46:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-16 10:46:47,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:47,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:47,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:47,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 10:46:47,123 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:47,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:47,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1490521748, now seen corresponding path program 4 times [2020-10-16 10:46:47,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:47,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247881288] [2020-10-16 10:46:47,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:47,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:47,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247881288] [2020-10-16 10:46:47,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 10:46:47,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 10:46:47,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850055294] [2020-10-16 10:46:47,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 10:46:47,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:47,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 10:46:47,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 10:46:47,179 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-16 10:46:47,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:47,249 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-16 10:46:47,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:46:47,250 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-16 10:46:47,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:47,251 INFO L225 Difference]: With dead ends: 105 [2020-10-16 10:46:47,251 INFO L226 Difference]: Without dead ends: 100 [2020-10-16 10:46:47,252 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 [2020-10-16 10:46:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-16 10:46:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-16 10:46:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-16 10:46:47,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-16 10:46:47,256 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-16 10:46:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:47,256 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-16 10:46:47,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 10:46:47,256 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-16 10:46:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:47,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:47,257 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:47,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 10:46:47,258 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:47,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:47,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1483163371, now seen corresponding path program 3 times [2020-10-16 10:46:47,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:47,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168796104] [2020-10-16 10:46:47,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:47,323 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:47,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168796104] [2020-10-16 10:46:47,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310673663] [2020-10-16 10:46:47,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:47,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:46:47,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:47,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:47,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:47,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:46:47,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:47,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:47,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-16 10:46:47,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674655492] [2020-10-16 10:46:47,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-16 10:46:47,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:47,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-16 10:46:47,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-16 10:46:47,461 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-16 10:46:47,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:47,580 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-16 10:46:47,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:46:47,580 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-16 10:46:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:47,582 INFO L225 Difference]: With dead ends: 122 [2020-10-16 10:46:47,583 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 10:46:47,583 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 [2020-10-16 10:46:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 10:46:47,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-16 10:46:47,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-16 10:46:47,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-16 10:46:47,590 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-16 10:46:47,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:47,590 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-16 10:46:47,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-16 10:46:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-16 10:46:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:47,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:47,592 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:47,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-16 10:46:47,807 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:47,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:47,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1021955896, now seen corresponding path program 6 times [2020-10-16 10:46:47,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:47,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315416599] [2020-10-16 10:46:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:47,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315416599] [2020-10-16 10:46:47,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400430059] [2020-10-16 10:46:47,897 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:47,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:46:47,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:47,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:47,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:48,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:48,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:48,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:48,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375504418] [2020-10-16 10:46:48,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:48,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:48,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:48,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:48,048 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-16 10:46:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:48,086 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-16 10:46:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 10:46:48,087 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-16 10:46:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:48,088 INFO L225 Difference]: With dead ends: 108 [2020-10-16 10:46:48,088 INFO L226 Difference]: Without dead ends: 105 [2020-10-16 10:46:48,089 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 [2020-10-16 10:46:48,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-16 10:46:48,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-16 10:46:48,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-16 10:46:48,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-16 10:46:48,097 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-16 10:46:48,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:48,097 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-16 10:46:48,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:48,097 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-16 10:46:48,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:48,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:48,098 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:48,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:48,310 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:48,310 INFO L82 PathProgramCache]: Analyzing trace with hash 1043405416, now seen corresponding path program 7 times [2020-10-16 10:46:48,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:48,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224409345] [2020-10-16 10:46:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:48,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224409345] [2020-10-16 10:46:48,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392268068] [2020-10-16 10:46:48,387 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:48,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:48,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:48,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:48,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:48,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761833819] [2020-10-16 10:46:48,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:48,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:48,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:48,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:48,516 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-16 10:46:48,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:48,561 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-16 10:46:48,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 10:46:48,562 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-16 10:46:48,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:48,563 INFO L225 Difference]: With dead ends: 116 [2020-10-16 10:46:48,563 INFO L226 Difference]: Without dead ends: 113 [2020-10-16 10:46:48,564 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 [2020-10-16 10:46:48,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-16 10:46:48,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-16 10:46:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-16 10:46:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-16 10:46:48,568 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-16 10:46:48,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:48,568 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-16 10:46:48,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:48,569 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-16 10:46:48,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:48,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:48,569 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:48,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-16 10:46:48,782 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:48,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:48,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1044097336, now seen corresponding path program 8 times [2020-10-16 10:46:48,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:48,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647907949] [2020-10-16 10:46:48,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:48,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:48,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647907949] [2020-10-16 10:46:48,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115525351] [2020-10-16 10:46:48,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:48,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:46:48,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:48,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:48,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:48,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:48,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:48,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:48,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078007635] [2020-10-16 10:46:48,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:48,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:48,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:48,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:48,992 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-16 10:46:49,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:49,080 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-16 10:46:49,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:46:49,080 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-16 10:46:49,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:49,082 INFO L225 Difference]: With dead ends: 115 [2020-10-16 10:46:49,082 INFO L226 Difference]: Without dead ends: 112 [2020-10-16 10:46:49,083 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 [2020-10-16 10:46:49,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-16 10:46:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-16 10:46:49,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-16 10:46:49,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-16 10:46:49,087 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-16 10:46:49,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:49,087 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-16 10:46:49,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:49,088 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-16 10:46:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 10:46:49,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:49,088 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:49,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-16 10:46:49,302 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:49,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:49,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1044119656, now seen corresponding path program 9 times [2020-10-16 10:46:49,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:49,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448809627] [2020-10-16 10:46:49,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:49,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:49,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448809627] [2020-10-16 10:46:49,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120310942] [2020-10-16 10:46:49,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:49,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:46:49,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:49,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:49,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:49,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:46:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:49,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:49,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:49,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263180787] [2020-10-16 10:46:49,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:49,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:49,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:49,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:49,474 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-16 10:46:49,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:49,606 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-16 10:46:49,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:46:49,606 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-16 10:46:49,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:49,608 INFO L225 Difference]: With dead ends: 124 [2020-10-16 10:46:49,608 INFO L226 Difference]: Without dead ends: 118 [2020-10-16 10:46:49,608 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 [2020-10-16 10:46:49,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-16 10:46:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-16 10:46:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-16 10:46:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-16 10:46:49,613 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-16 10:46:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:49,613 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-16 10:46:49,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-16 10:46:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:49,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:49,614 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:49,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-16 10:46:49,826 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:49,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1016324353, now seen corresponding path program 5 times [2020-10-16 10:46:49,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:49,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293509128] [2020-10-16 10:46:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:49,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:49,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293509128] [2020-10-16 10:46:49,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631201014] [2020-10-16 10:46:49,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:49,978 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:46:49,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:49,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:49,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:50,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:50,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:50,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:50,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281267615] [2020-10-16 10:46:50,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:50,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:50,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:50,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:50,071 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-16 10:46:50,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:50,121 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-16 10:46:50,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 10:46:50,122 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:50,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:50,124 INFO L225 Difference]: With dead ends: 113 [2020-10-16 10:46:50,124 INFO L226 Difference]: Without dead ends: 111 [2020-10-16 10:46:50,125 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 [2020-10-16 10:46:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-16 10:46:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-16 10:46:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-16 10:46:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-16 10:46:50,131 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-16 10:46:50,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:50,131 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-16 10:46:50,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:50,131 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-16 10:46:50,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:50,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:50,132 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:50,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-16 10:46:50,345 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:50,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:50,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1016325314, now seen corresponding path program 6 times [2020-10-16 10:46:50,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:50,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889230719] [2020-10-16 10:46:50,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:50,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889230719] [2020-10-16 10:46:50,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144630504] [2020-10-16 10:46:50,428 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:50,484 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:46:50,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:50,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:50,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:50,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:50,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:50,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442404643] [2020-10-16 10:46:50,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:50,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:50,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:50,557 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-16 10:46:50,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:50,626 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-16 10:46:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 10:46:50,628 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:50,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:50,629 INFO L225 Difference]: With dead ends: 118 [2020-10-16 10:46:50,629 INFO L226 Difference]: Without dead ends: 116 [2020-10-16 10:46:50,630 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 [2020-10-16 10:46:50,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-16 10:46:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-16 10:46:50,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-16 10:46:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-16 10:46:50,636 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-16 10:46:50,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:50,636 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-16 10:46:50,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:50,636 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-16 10:46:50,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:50,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:50,637 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:50,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:50,851 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:50,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1016354144, now seen corresponding path program 7 times [2020-10-16 10:46:50,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:50,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565342272] [2020-10-16 10:46:50,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:50,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565342272] [2020-10-16 10:46:50,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331377984] [2020-10-16 10:46:50,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:50,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:50,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:51,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:51,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:51,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:51,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584430001] [2020-10-16 10:46:51,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:51,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:51,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:51,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:51,073 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-16 10:46:51,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:51,162 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-16 10:46:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 10:46:51,163 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:51,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:51,164 INFO L225 Difference]: With dead ends: 119 [2020-10-16 10:46:51,164 INFO L226 Difference]: Without dead ends: 117 [2020-10-16 10:46:51,165 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 [2020-10-16 10:46:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-16 10:46:51,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-16 10:46:51,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 10:46:51,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-16 10:46:51,171 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-16 10:46:51,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:51,172 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-16 10:46:51,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:51,172 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-16 10:46:51,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:51,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:51,173 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:51,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:51,388 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:51,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:51,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1036880143, now seen corresponding path program 8 times [2020-10-16 10:46:51,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:51,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559268937] [2020-10-16 10:46:51,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:51,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:51,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559268937] [2020-10-16 10:46:51,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941092728] [2020-10-16 10:46:51,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:51,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:46:51,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:51,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:51,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:51,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:51,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:51,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347059123] [2020-10-16 10:46:51,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:51,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:51,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:51,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:51,647 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-16 10:46:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:51,699 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-16 10:46:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 10:46:51,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:51,701 INFO L225 Difference]: With dead ends: 122 [2020-10-16 10:46:51,701 INFO L226 Difference]: Without dead ends: 120 [2020-10-16 10:46:51,701 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 [2020-10-16 10:46:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-16 10:46:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-16 10:46:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-16 10:46:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-16 10:46:51,704 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-16 10:46:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:51,706 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-16 10:46:51,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-16 10:46:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:51,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:51,707 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:51,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-16 10:46:51,917 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:51,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1036881104, now seen corresponding path program 9 times [2020-10-16 10:46:51,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:51,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103560504] [2020-10-16 10:46:51,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:51,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103560504] [2020-10-16 10:46:51,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433724840] [2020-10-16 10:46:51,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:52,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:46:52,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:52,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:52,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:52,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:52,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:52,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:52,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395936752] [2020-10-16 10:46:52,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:52,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:52,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:52,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:52,106 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-16 10:46:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:52,194 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-16 10:46:52,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:46:52,195 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:52,196 INFO L225 Difference]: With dead ends: 123 [2020-10-16 10:46:52,196 INFO L226 Difference]: Without dead ends: 121 [2020-10-16 10:46:52,197 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 [2020-10-16 10:46:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-16 10:46:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-16 10:46:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-16 10:46:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-16 10:46:52,201 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-16 10:46:52,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:52,201 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-16 10:46:52,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:52,202 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-16 10:46:52,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:52,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:52,202 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:52,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:52,403 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:52,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:52,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1037543233, now seen corresponding path program 10 times [2020-10-16 10:46:52,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:52,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074452635] [2020-10-16 10:46:52,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:52,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:52,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074452635] [2020-10-16 10:46:52,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012164438] [2020-10-16 10:46:52,468 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:52,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:46:52,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:52,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:52,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:52,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:52,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:52,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:52,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967247977] [2020-10-16 10:46:52,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:52,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:52,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:52,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:52,611 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-16 10:46:52,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:52,679 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-16 10:46:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:46:52,680 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:52,681 INFO L225 Difference]: With dead ends: 123 [2020-10-16 10:46:52,681 INFO L226 Difference]: Without dead ends: 121 [2020-10-16 10:46:52,681 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 [2020-10-16 10:46:52,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-16 10:46:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-16 10:46:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-16 10:46:52,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-16 10:46:52,686 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-16 10:46:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:52,686 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-16 10:46:52,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:52,687 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-16 10:46:52,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:52,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:52,687 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:52,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-16 10:46:52,888 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:52,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:52,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1037565553, now seen corresponding path program 11 times [2020-10-16 10:46:52,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:52,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367715141] [2020-10-16 10:46:52,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:52,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:52,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367715141] [2020-10-16 10:46:52,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183896367] [2020-10-16 10:46:52,990 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:53,046 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:46:53,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:53,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:53,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:53,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:46:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:53,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:53,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:53,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484483502] [2020-10-16 10:46:53,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:53,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:53,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:53,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:53,159 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-16 10:46:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:53,336 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-16 10:46:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:46:53,337 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:53,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:53,338 INFO L225 Difference]: With dead ends: 133 [2020-10-16 10:46:53,338 INFO L226 Difference]: Without dead ends: 128 [2020-10-16 10:46:53,339 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 [2020-10-16 10:46:53,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-16 10:46:53,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-16 10:46:53,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-16 10:46:53,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-16 10:46:53,343 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-16 10:46:53,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:53,343 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-16 10:46:53,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:53,343 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-16 10:46:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:53,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:53,344 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:53,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:53,555 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:53,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:53,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1037573024, now seen corresponding path program 12 times [2020-10-16 10:46:53,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:53,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425757696] [2020-10-16 10:46:53,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:53,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425757696] [2020-10-16 10:46:53,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343883410] [2020-10-16 10:46:53,615 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:53,686 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:46:53,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:53,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:53,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:53,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:53,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:53,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852760028] [2020-10-16 10:46:53,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:53,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:53,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:53,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:53,791 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-16 10:46:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:53,891 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-16 10:46:53,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:46:53,892 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:53,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:53,893 INFO L225 Difference]: With dead ends: 127 [2020-10-16 10:46:53,893 INFO L226 Difference]: Without dead ends: 125 [2020-10-16 10:46:53,893 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 [2020-10-16 10:46:53,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-16 10:46:53,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-16 10:46:53,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 10:46:53,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-16 10:46:53,898 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-16 10:46:53,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:53,898 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-16 10:46:53,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:53,898 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-16 10:46:53,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:53,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:53,899 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:54,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-16 10:46:54,110 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:54,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:54,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1037594383, now seen corresponding path program 13 times [2020-10-16 10:46:54,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:54,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521234147] [2020-10-16 10:46:54,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:54,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521234147] [2020-10-16 10:46:54,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770919709] [2020-10-16 10:46:54,160 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:54,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:54,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:54,274 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:46:54,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:54,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:54,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:54,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421383160] [2020-10-16 10:46:54,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:54,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:54,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:54,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:54,292 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-16 10:46:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:54,505 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-16 10:46:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:46:54,506 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:54,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:54,507 INFO L225 Difference]: With dead ends: 141 [2020-10-16 10:46:54,507 INFO L226 Difference]: Without dead ends: 136 [2020-10-16 10:46:54,508 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 [2020-10-16 10:46:54,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-16 10:46:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-16 10:46:54,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 10:46:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-16 10:46:54,513 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-16 10:46:54,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:54,514 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-16 10:46:54,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-16 10:46:54,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:54,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:54,517 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:54,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-16 10:46:54,728 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:54,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:54,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1037595344, now seen corresponding path program 14 times [2020-10-16 10:46:54,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:54,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928856463] [2020-10-16 10:46:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:54,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928856463] [2020-10-16 10:46:54,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555561789] [2020-10-16 10:46:54,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:54,861 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:46:54,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:54,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:54,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:54,928 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:46:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:54,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:54,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:54,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028113979] [2020-10-16 10:46:54,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:54,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:54,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:54,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:54,943 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-16 10:46:55,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:55,112 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-16 10:46:55,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:46:55,113 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:55,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:55,114 INFO L225 Difference]: With dead ends: 136 [2020-10-16 10:46:55,114 INFO L226 Difference]: Without dead ends: 131 [2020-10-16 10:46:55,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:46:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-16 10:46:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-16 10:46:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-16 10:46:55,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-16 10:46:55,120 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-16 10:46:55,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:55,120 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-16 10:46:55,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:55,120 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-16 10:46:55,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:55,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:55,121 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:55,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-16 10:46:55,332 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:55,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:55,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1037803664, now seen corresponding path program 15 times [2020-10-16 10:46:55,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:55,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968782026] [2020-10-16 10:46:55,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:55,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968782026] [2020-10-16 10:46:55,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972904986] [2020-10-16 10:46:55,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:55,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:46:55,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:55,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:55,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:55,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:55,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:55,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567637725] [2020-10-16 10:46:55,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:55,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:55,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:55,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:55,524 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-16 10:46:55,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:55,624 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-16 10:46:55,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:46:55,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:55,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:55,625 INFO L225 Difference]: With dead ends: 130 [2020-10-16 10:46:55,625 INFO L226 Difference]: Without dead ends: 128 [2020-10-16 10:46:55,626 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 [2020-10-16 10:46:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-16 10:46:55,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-16 10:46:55,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-16 10:46:55,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-16 10:46:55,630 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-16 10:46:55,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:55,630 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-16 10:46:55,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-16 10:46:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:55,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:55,631 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:55,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-16 10:46:55,844 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:55,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:55,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1038466754, now seen corresponding path program 16 times [2020-10-16 10:46:55,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:55,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269089279] [2020-10-16 10:46:55,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:55,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269089279] [2020-10-16 10:46:55,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793324756] [2020-10-16 10:46:55,921 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:55,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:46:55,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:55,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:55,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:56,092 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:56,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:56,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:56,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062871509] [2020-10-16 10:46:56,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:56,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:56,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:56,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:56,094 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-16 10:46:56,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:56,218 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-16 10:46:56,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:46:56,218 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:56,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:56,220 INFO L225 Difference]: With dead ends: 131 [2020-10-16 10:46:56,220 INFO L226 Difference]: Without dead ends: 129 [2020-10-16 10:46:56,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-16 10:46:56,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-16 10:46:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-16 10:46:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-16 10:46:56,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-16 10:46:56,224 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-16 10:46:56,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:56,224 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-16 10:46:56,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:56,225 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-16 10:46:56,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:56,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:56,225 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:56,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-16 10:46:56,436 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:56,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1038488113, now seen corresponding path program 17 times [2020-10-16 10:46:56,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:56,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601633396] [2020-10-16 10:46:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:56,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:56,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601633396] [2020-10-16 10:46:56,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272794579] [2020-10-16 10:46:56,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:56,524 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:46:56,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:56,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:56,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:56,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:46:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:56,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:56,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:56,582 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931567873] [2020-10-16 10:46:56,582 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:56,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:56,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:56,582 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-16 10:46:56,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:56,699 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-16 10:46:56,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:46:56,700 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:56,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:56,701 INFO L225 Difference]: With dead ends: 131 [2020-10-16 10:46:56,701 INFO L226 Difference]: Without dead ends: 126 [2020-10-16 10:46:56,702 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 [2020-10-16 10:46:56,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-16 10:46:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-16 10:46:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-16 10:46:56,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-16 10:46:56,705 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-16 10:46:56,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:56,706 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-16 10:46:56,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-16 10:46:56,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:56,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:56,706 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:56,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:56,917 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:56,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:56,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1038489074, now seen corresponding path program 18 times [2020-10-16 10:46:56,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:56,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075217935] [2020-10-16 10:46:56,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:56,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:56,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075217935] [2020-10-16 10:46:56,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138223466] [2020-10-16 10:46:56,964 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:57,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:46:57,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:57,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:57,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:57,070 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:46:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:57,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:57,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:57,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372100808] [2020-10-16 10:46:57,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:57,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:57,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:57,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:57,080 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-16 10:46:57,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:57,310 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-16 10:46:57,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:46:57,310 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:57,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:57,312 INFO L225 Difference]: With dead ends: 145 [2020-10-16 10:46:57,313 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 10:46:57,313 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 [2020-10-16 10:46:57,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 10:46:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-16 10:46:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-16 10:46:57,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-16 10:46:57,317 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-16 10:46:57,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:57,318 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-16 10:46:57,318 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:57,318 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-16 10:46:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:57,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:57,319 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:57,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-16 10:46:57,529 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:57,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:57,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1038517904, now seen corresponding path program 19 times [2020-10-16 10:46:57,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:57,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125503333] [2020-10-16 10:46:57,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:57,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125503333] [2020-10-16 10:46:57,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730942159] [2020-10-16 10:46:57,590 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:57,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-16 10:46:57,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:57,698 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:46:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:57,716 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:57,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-16 10:46:57,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862036968] [2020-10-16 10:46:57,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-16 10:46:57,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:57,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-16 10:46:57,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-16 10:46:57,719 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-16 10:46:57,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:57,947 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-16 10:46:57,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:46:57,948 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-16 10:46:57,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:57,951 INFO L225 Difference]: With dead ends: 135 [2020-10-16 10:46:57,951 INFO L226 Difference]: Without dead ends: 130 [2020-10-16 10:46:57,951 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 [2020-10-16 10:46:57,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-16 10:46:57,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-16 10:46:57,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-16 10:46:57,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-16 10:46:57,957 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-16 10:46:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:57,958 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-16 10:46:57,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-16 10:46:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-16 10:46:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:57,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:57,959 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:58,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:46:58,174 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:58,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1266597800, now seen corresponding path program 4 times [2020-10-16 10:46:58,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:58,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676169920] [2020-10-16 10:46:58,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:58,295 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:58,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676169920] [2020-10-16 10:46:58,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469586218] [2020-10-16 10:46:58,296 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:58,357 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:46:58,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:58,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:46:58,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:58,465 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:46:58,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:58,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:58,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-16 10:46:58,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864956257] [2020-10-16 10:46:58,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 10:46:58,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:58,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 10:46:58,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-16 10:46:58,491 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-16 10:46:58,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:58,598 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-16 10:46:58,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:46:58,599 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-16 10:46:58,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:58,600 INFO L225 Difference]: With dead ends: 143 [2020-10-16 10:46:58,600 INFO L226 Difference]: Without dead ends: 138 [2020-10-16 10:46:58,600 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 [2020-10-16 10:46:58,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-16 10:46:58,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-16 10:46:58,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-16 10:46:58,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-16 10:46:58,607 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-16 10:46:58,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:58,607 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-16 10:46:58,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 10:46:58,607 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-16 10:46:58,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:58,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:58,608 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:58,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-16 10:46:58,819 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:58,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:58,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1615862390, now seen corresponding path program 10 times [2020-10-16 10:46:58,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:58,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190989096] [2020-10-16 10:46:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:58,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:58,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190989096] [2020-10-16 10:46:58,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88729660] [2020-10-16 10:46:58,909 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:58,944 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:46:58,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:58,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:46:58,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:59,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:59,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:46:59,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695843061] [2020-10-16 10:46:59,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:46:59,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:59,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:46:59,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:46:59,039 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-16 10:46:59,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:59,090 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-16 10:46:59,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 10:46:59,090 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-16 10:46:59,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:59,091 INFO L225 Difference]: With dead ends: 132 [2020-10-16 10:46:59,092 INFO L226 Difference]: Without dead ends: 129 [2020-10-16 10:46:59,092 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 [2020-10-16 10:46:59,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-16 10:46:59,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-16 10:46:59,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-16 10:46:59,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-16 10:46:59,096 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-16 10:46:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:59,097 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-16 10:46:59,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:46:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-16 10:46:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:59,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:59,115 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:59,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-16 10:46:59,327 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:59,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:59,327 INFO L82 PathProgramCache]: Analyzing trace with hash -2014169786, now seen corresponding path program 11 times [2020-10-16 10:46:59,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:59,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644840035] [2020-10-16 10:46:59,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:59,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644840035] [2020-10-16 10:46:59,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352991628] [2020-10-16 10:46:59,413 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:59,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:46:59,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:59,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:46:59,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:46:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:59,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:46:59,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:46:59,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082372698] [2020-10-16 10:46:59,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:46:59,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:46:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:46:59,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:46:59,556 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-16 10:46:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:46:59,616 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-16 10:46:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:46:59,616 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-16 10:46:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:46:59,617 INFO L225 Difference]: With dead ends: 143 [2020-10-16 10:46:59,617 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 10:46:59,618 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 [2020-10-16 10:46:59,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 10:46:59,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-16 10:46:59,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-16 10:46:59,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-16 10:46:59,622 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-16 10:46:59,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:46:59,622 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-16 10:46:59,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:46:59,622 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-16 10:46:59,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:46:59,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:46:59,624 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:46:59,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-16 10:46:59,834 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:46:59,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:46:59,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1992720266, now seen corresponding path program 12 times [2020-10-16 10:46:59,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:46:59,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615517352] [2020-10-16 10:46:59,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:46:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:46:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:46:59,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615517352] [2020-10-16 10:46:59,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761878069] [2020-10-16 10:46:59,912 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:46:59,955 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:46:59,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:46:59,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:46:59,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:00,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:00,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:00,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:00,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721113171] [2020-10-16 10:47:00,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:00,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:00,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:00,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:00,038 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-16 10:47:00,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:00,130 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-16 10:47:00,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:47:00,130 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-16 10:47:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:00,131 INFO L225 Difference]: With dead ends: 142 [2020-10-16 10:47:00,132 INFO L226 Difference]: Without dead ends: 139 [2020-10-16 10:47:00,132 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 [2020-10-16 10:47:00,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-16 10:47:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-16 10:47:00,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-16 10:47:00,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-16 10:47:00,136 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-16 10:47:00,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:00,136 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-16 10:47:00,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:00,137 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-16 10:47:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:47:00,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:00,137 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:00,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-16 10:47:00,347 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:00,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:00,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1992028346, now seen corresponding path program 13 times [2020-10-16 10:47:00,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:00,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103897613] [2020-10-16 10:47:00,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:00,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103897613] [2020-10-16 10:47:00,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071867992] [2020-10-16 10:47:00,412 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:00,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:00,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:00,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:00,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:00,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:00,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172427164] [2020-10-16 10:47:00,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:00,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:00,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:00,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:00,528 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-16 10:47:00,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:00,620 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-16 10:47:00,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:47:00,621 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-16 10:47:00,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:00,622 INFO L225 Difference]: With dead ends: 141 [2020-10-16 10:47:00,622 INFO L226 Difference]: Without dead ends: 138 [2020-10-16 10:47:00,622 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 [2020-10-16 10:47:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-16 10:47:00,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-16 10:47:00,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 10:47:00,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-16 10:47:00,627 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-16 10:47:00,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:00,627 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-16 10:47:00,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:00,627 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-16 10:47:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 10:47:00,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:00,628 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:00,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-16 10:47:00,839 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:00,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:00,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1992006026, now seen corresponding path program 14 times [2020-10-16 10:47:00,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:00,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365936624] [2020-10-16 10:47:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:00,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:00,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365936624] [2020-10-16 10:47:00,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12659685] [2020-10-16 10:47:00,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:00,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:00,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:00,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:00,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:01,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:01,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:01,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:01,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957682528] [2020-10-16 10:47:01,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:01,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:01,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:01,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:01,049 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-16 10:47:01,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:01,191 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-16 10:47:01,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:01,192 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-16 10:47:01,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:01,193 INFO L225 Difference]: With dead ends: 150 [2020-10-16 10:47:01,193 INFO L226 Difference]: Without dead ends: 144 [2020-10-16 10:47:01,193 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 [2020-10-16 10:47:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-16 10:47:01,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-16 10:47:01,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-16 10:47:01,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-16 10:47:01,197 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-16 10:47:01,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:01,198 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-16 10:47:01,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:01,198 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-16 10:47:01,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:01,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:01,198 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:01,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:01,409 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:01,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1441283596, now seen corresponding path program 20 times [2020-10-16 10:47:01,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:01,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576017191] [2020-10-16 10:47:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:01,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:01,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576017191] [2020-10-16 10:47:01,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757529124] [2020-10-16 10:47:01,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:01,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:01,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:01,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:01,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:01,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:01,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:01,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470113236] [2020-10-16 10:47:01,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:01,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:01,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:01,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:01,639 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-16 10:47:01,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:01,682 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-16 10:47:01,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-16 10:47:01,683 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:01,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:01,684 INFO L225 Difference]: With dead ends: 138 [2020-10-16 10:47:01,684 INFO L226 Difference]: Without dead ends: 136 [2020-10-16 10:47:01,684 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 [2020-10-16 10:47:01,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-16 10:47:01,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-16 10:47:01,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-16 10:47:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-16 10:47:01,688 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-16 10:47:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:01,689 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-16 10:47:01,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-16 10:47:01,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:01,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:01,689 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:01,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-16 10:47:01,901 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:01,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:01,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1441284557, now seen corresponding path program 21 times [2020-10-16 10:47:01,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:01,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399884238] [2020-10-16 10:47:01,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:02,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:02,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399884238] [2020-10-16 10:47:02,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804188676] [2020-10-16 10:47:02,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:02,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:02,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:02,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:02,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:02,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:02,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:02,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326868634] [2020-10-16 10:47:02,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:02,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:02,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:02,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:02,154 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-16 10:47:02,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:02,249 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-16 10:47:02,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:47:02,250 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:02,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:02,252 INFO L225 Difference]: With dead ends: 145 [2020-10-16 10:47:02,252 INFO L226 Difference]: Without dead ends: 143 [2020-10-16 10:47:02,252 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 [2020-10-16 10:47:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-16 10:47:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-16 10:47:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-16 10:47:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-16 10:47:02,256 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-16 10:47:02,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:02,257 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-16 10:47:02,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-16 10:47:02,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:02,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:02,258 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:02,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-16 10:47:02,470 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:02,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:02,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1441313387, now seen corresponding path program 22 times [2020-10-16 10:47:02,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:02,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839299215] [2020-10-16 10:47:02,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:02,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839299215] [2020-10-16 10:47:02,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170786782] [2020-10-16 10:47:02,533 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:02,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:02,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:02,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:02,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:02,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:02,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:02,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:02,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420024174] [2020-10-16 10:47:02,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:02,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:02,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:02,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:02,675 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-16 10:47:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:02,798 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-16 10:47:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:47:02,799 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:02,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:02,800 INFO L225 Difference]: With dead ends: 150 [2020-10-16 10:47:02,800 INFO L226 Difference]: Without dead ends: 148 [2020-10-16 10:47:02,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:47:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-16 10:47:02,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-16 10:47:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 10:47:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-16 10:47:02,805 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-16 10:47:02,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:02,805 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-16 10:47:02,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-16 10:47:02,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:02,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:02,806 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:03,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:03,017 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:03,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:03,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1442207117, now seen corresponding path program 23 times [2020-10-16 10:47:03,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:03,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439274438] [2020-10-16 10:47:03,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:03,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:03,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439274438] [2020-10-16 10:47:03,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43111356] [2020-10-16 10:47:03,096 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:03,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:47:03,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:03,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:03,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:03,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:03,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:03,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966234973] [2020-10-16 10:47:03,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:03,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:03,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:03,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:03,303 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-16 10:47:03,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:03,442 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-16 10:47:03,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:47:03,442 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:03,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:03,444 INFO L225 Difference]: With dead ends: 148 [2020-10-16 10:47:03,444 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 10:47:03,444 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 [2020-10-16 10:47:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 10:47:03,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-16 10:47:03,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 10:47:03,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-16 10:47:03,450 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-16 10:47:03,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:03,451 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-16 10:47:03,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:03,451 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-16 10:47:03,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:03,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:03,452 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:03,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-16 10:47:03,664 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:03,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:03,665 INFO L82 PathProgramCache]: Analyzing trace with hash 1442208078, now seen corresponding path program 24 times [2020-10-16 10:47:03,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:03,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339045488] [2020-10-16 10:47:03,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:03,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:03,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339045488] [2020-10-16 10:47:03,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067818287] [2020-10-16 10:47:03,747 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:03,787 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:03,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:03,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:03,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:03,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:03,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:03,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58685369] [2020-10-16 10:47:03,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:03,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:03,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:03,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:03,872 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-16 10:47:03,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:03,992 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-16 10:47:03,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:47:03,993 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:03,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:03,994 INFO L225 Difference]: With dead ends: 149 [2020-10-16 10:47:03,994 INFO L226 Difference]: Without dead ends: 147 [2020-10-16 10:47:03,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:47:03,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-16 10:47:03,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-16 10:47:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 10:47:03,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-16 10:47:03,998 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-16 10:47:03,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:03,999 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-16 10:47:03,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:03,999 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-16 10:47:03,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:04,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:04,000 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:04,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:04,212 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:04,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:04,212 INFO L82 PathProgramCache]: Analyzing trace with hash 2078513086, now seen corresponding path program 25 times [2020-10-16 10:47:04,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:04,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913717937] [2020-10-16 10:47:04,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:04,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:04,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913717937] [2020-10-16 10:47:04,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880388115] [2020-10-16 10:47:04,299 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:04,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:04,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:04,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:04,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:04,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294192748] [2020-10-16 10:47:04,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:04,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:04,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:04,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:04,464 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-16 10:47:04,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:04,535 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-16 10:47:04,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:47:04,535 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:04,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:04,537 INFO L225 Difference]: With dead ends: 152 [2020-10-16 10:47:04,537 INFO L226 Difference]: Without dead ends: 150 [2020-10-16 10:47:04,537 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 [2020-10-16 10:47:04,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-16 10:47:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-16 10:47:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-16 10:47:04,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-16 10:47:04,541 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-16 10:47:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:04,541 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-16 10:47:04,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:04,542 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-16 10:47:04,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:04,542 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:04,542 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:04,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-16 10:47:04,754 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:04,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:04,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2078514047, now seen corresponding path program 26 times [2020-10-16 10:47:04,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:04,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223220143] [2020-10-16 10:47:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:04,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223220143] [2020-10-16 10:47:04,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901745267] [2020-10-16 10:47:04,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:04,904 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:04,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:04,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:04,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:04,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:04,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:04,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9604629] [2020-10-16 10:47:04,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:04,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:04,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:04,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:04,999 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-16 10:47:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:05,137 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-16 10:47:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:47:05,138 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:05,139 INFO L225 Difference]: With dead ends: 153 [2020-10-16 10:47:05,139 INFO L226 Difference]: Without dead ends: 151 [2020-10-16 10:47:05,139 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 [2020-10-16 10:47:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-16 10:47:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-16 10:47:05,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 10:47:05,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-16 10:47:05,143 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-16 10:47:05,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:05,143 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-16 10:47:05,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:05,144 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-16 10:47:05,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:05,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:05,145 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:05,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-16 10:47:05,354 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:05,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:05,354 INFO L82 PathProgramCache]: Analyzing trace with hash 2078542877, now seen corresponding path program 27 times [2020-10-16 10:47:05,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:05,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815023403] [2020-10-16 10:47:05,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:05,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:05,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815023403] [2020-10-16 10:47:05,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461251225] [2020-10-16 10:47:05,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:05,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:05,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:05,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:05,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:05,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:05,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:05,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:05,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018409190] [2020-10-16 10:47:05,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:05,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:05,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:05,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:05,561 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-16 10:47:05,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:05,690 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-16 10:47:05,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:47:05,690 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:05,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:05,692 INFO L225 Difference]: With dead ends: 156 [2020-10-16 10:47:05,692 INFO L226 Difference]: Without dead ends: 154 [2020-10-16 10:47:05,693 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 [2020-10-16 10:47:05,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-16 10:47:05,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-16 10:47:05,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-16 10:47:05,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-16 10:47:05,697 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-16 10:47:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:05,697 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-16 10:47:05,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:05,697 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-16 10:47:05,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:05,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:05,698 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:05,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-16 10:47:05,910 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:05,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:05,910 INFO L82 PathProgramCache]: Analyzing trace with hash 2099068876, now seen corresponding path program 28 times [2020-10-16 10:47:05,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:05,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218694371] [2020-10-16 10:47:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:05,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218694371] [2020-10-16 10:47:05,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350161429] [2020-10-16 10:47:05,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:06,043 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:06,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:06,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:06,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:06,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:06,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:06,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929372826] [2020-10-16 10:47:06,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:06,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:06,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:06,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:06,140 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-16 10:47:06,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:06,219 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-16 10:47:06,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:47:06,219 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:06,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:06,220 INFO L225 Difference]: With dead ends: 148 [2020-10-16 10:47:06,221 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 10:47:06,221 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 [2020-10-16 10:47:06,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 10:47:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-16 10:47:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-16 10:47:06,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-16 10:47:06,225 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-16 10:47:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:06,225 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-16 10:47:06,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-16 10:47:06,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:06,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:06,226 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:06,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-16 10:47:06,434 INFO L429 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:06,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:06,434 INFO L82 PathProgramCache]: Analyzing trace with hash 2099069837, now seen corresponding path program 29 times [2020-10-16 10:47:06,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:06,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937021580] [2020-10-16 10:47:06,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:06,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937021580] [2020-10-16 10:47:06,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996361069] [2020-10-16 10:47:06,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:06,561 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:06,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:06,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:06,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:06,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:06,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:06,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:06,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046802199] [2020-10-16 10:47:06,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:06,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:06,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:06,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:06,659 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-16 10:47:06,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:06,792 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-16 10:47:06,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:06,792 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:06,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:06,793 INFO L225 Difference]: With dead ends: 157 [2020-10-16 10:47:06,793 INFO L226 Difference]: Without dead ends: 155 [2020-10-16 10:47:06,793 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 [2020-10-16 10:47:06,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-16 10:47:06,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-16 10:47:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 10:47:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-16 10:47:06,797 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-16 10:47:06,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:06,797 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-16 10:47:06,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:06,797 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-16 10:47:06,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:06,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:06,798 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:07,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:07,007 INFO L429 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:07,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:07,007 INFO L82 PathProgramCache]: Analyzing trace with hash 2099731966, now seen corresponding path program 30 times [2020-10-16 10:47:07,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:07,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766684972] [2020-10-16 10:47:07,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:07,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:07,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766684972] [2020-10-16 10:47:07,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682288330] [2020-10-16 10:47:07,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:07,114 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:07,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:07,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:47:07,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:07,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:07,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-16 10:47:07,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753581770] [2020-10-16 10:47:07,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-16 10:47:07,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:07,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-16 10:47:07,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-16 10:47:07,136 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-16 10:47:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:07,220 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-16 10:47:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:47:07,221 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-16 10:47:07,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:07,222 INFO L225 Difference]: With dead ends: 149 [2020-10-16 10:47:07,222 INFO L226 Difference]: Without dead ends: 147 [2020-10-16 10:47:07,222 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 [2020-10-16 10:47:07,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-16 10:47:07,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-16 10:47:07,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-16 10:47:07,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-16 10:47:07,226 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-16 10:47:07,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:07,226 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-16 10:47:07,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-16 10:47:07,227 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-16 10:47:07,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:07,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:07,227 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:07,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-16 10:47:07,428 INFO L429 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:07,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:07,429 INFO L82 PathProgramCache]: Analyzing trace with hash 2099754286, now seen corresponding path program 31 times [2020-10-16 10:47:07,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:07,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114532857] [2020-10-16 10:47:07,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:07,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114532857] [2020-10-16 10:47:07,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268104665] [2020-10-16 10:47:07,491 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:07,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:07,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:07,629 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:07,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:07,666 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:07,666 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133062711] [2020-10-16 10:47:07,666 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:07,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:07,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:07,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:07,667 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-16 10:47:07,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:07,906 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-16 10:47:07,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:07,906 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:07,908 INFO L225 Difference]: With dead ends: 164 [2020-10-16 10:47:07,908 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 10:47:07,908 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 [2020-10-16 10:47:07,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 10:47:07,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-16 10:47:07,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-16 10:47:07,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-16 10:47:07,911 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-16 10:47:07,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:07,912 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-16 10:47:07,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:07,912 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-16 10:47:07,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:07,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:07,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:08,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-16 10:47:08,116 INFO L429 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:08,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:08,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2099761757, now seen corresponding path program 32 times [2020-10-16 10:47:08,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:08,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720082564] [2020-10-16 10:47:08,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:08,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:08,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720082564] [2020-10-16 10:47:08,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051600941] [2020-10-16 10:47:08,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:08,212 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:08,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:08,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:08,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:08,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:08,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:08,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:08,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785468647] [2020-10-16 10:47:08,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:08,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:08,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:08,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:08,324 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-16 10:47:08,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:08,499 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-16 10:47:08,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:47:08,500 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:08,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:08,502 INFO L225 Difference]: With dead ends: 156 [2020-10-16 10:47:08,502 INFO L226 Difference]: Without dead ends: 154 [2020-10-16 10:47:08,502 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 [2020-10-16 10:47:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-16 10:47:08,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-16 10:47:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-16 10:47:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-16 10:47:08,506 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-16 10:47:08,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:08,506 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-16 10:47:08,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:08,507 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-16 10:47:08,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:08,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:08,512 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:08,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:08,722 INFO L429 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:08,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2099783116, now seen corresponding path program 33 times [2020-10-16 10:47:08,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:08,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116200849] [2020-10-16 10:47:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:08,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116200849] [2020-10-16 10:47:08,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436858572] [2020-10-16 10:47:08,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:08,820 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:08,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:08,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:08,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:08,912 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:08,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:08,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:08,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066785776] [2020-10-16 10:47:08,944 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:08,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:08,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:08,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:08,946 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-16 10:47:09,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:09,284 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-16 10:47:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:47:09,285 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:09,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:09,286 INFO L225 Difference]: With dead ends: 176 [2020-10-16 10:47:09,287 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 10:47:09,287 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=186, Invalid=366, Unknown=0, NotChecked=0, Total=552 [2020-10-16 10:47:09,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 10:47:09,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-16 10:47:09,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-16 10:47:09,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-16 10:47:09,291 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-16 10:47:09,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:09,292 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-16 10:47:09,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:09,292 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-16 10:47:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:09,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:09,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:09,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-16 10:47:09,498 INFO L429 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:09,498 INFO L82 PathProgramCache]: Analyzing trace with hash 2099784077, now seen corresponding path program 34 times [2020-10-16 10:47:09,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:09,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846872487] [2020-10-16 10:47:09,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:09,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:09,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846872487] [2020-10-16 10:47:09,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266732578] [2020-10-16 10:47:09,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:09,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:09,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:09,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:09,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:09,691 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:09,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:09,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:09,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489268716] [2020-10-16 10:47:09,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:09,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:09,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:09,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:09,729 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-16 10:47:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:09,970 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-16 10:47:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:09,970 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:09,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:09,972 INFO L225 Difference]: With dead ends: 166 [2020-10-16 10:47:09,972 INFO L226 Difference]: Without dead ends: 161 [2020-10-16 10:47:09,972 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 [2020-10-16 10:47:09,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-16 10:47:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-16 10:47:09,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-16 10:47:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-16 10:47:09,977 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-16 10:47:09,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:09,977 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-16 10:47:09,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:09,977 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-16 10:47:09,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:09,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:09,978 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:10,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:10,188 INFO L429 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:10,189 INFO L82 PathProgramCache]: Analyzing trace with hash 2099992397, now seen corresponding path program 35 times [2020-10-16 10:47:10,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:10,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756865663] [2020-10-16 10:47:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:10,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756865663] [2020-10-16 10:47:10,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633136068] [2020-10-16 10:47:10,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:10,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:10,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:10,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:10,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:10,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:10,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:10,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795844217] [2020-10-16 10:47:10,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:10,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:10,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:10,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:10,375 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-16 10:47:10,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:10,556 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-16 10:47:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:10,556 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:10,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:10,558 INFO L225 Difference]: With dead ends: 163 [2020-10-16 10:47:10,558 INFO L226 Difference]: Without dead ends: 161 [2020-10-16 10:47:10,558 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 [2020-10-16 10:47:10,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-16 10:47:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-16 10:47:10,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-16 10:47:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-16 10:47:10,562 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-16 10:47:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:10,562 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-16 10:47:10,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-16 10:47:10,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:10,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:10,563 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:10,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-16 10:47:10,771 INFO L429 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash 2100655487, now seen corresponding path program 36 times [2020-10-16 10:47:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:10,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566875913] [2020-10-16 10:47:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:10,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566875913] [2020-10-16 10:47:10,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699331316] [2020-10-16 10:47:10,830 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:10,870 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:10,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:10,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:10,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:10,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:10,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:10,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:10,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851311651] [2020-10-16 10:47:10,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:10,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:10,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:10,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:10,975 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-16 10:47:11,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:11,233 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-16 10:47:11,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:11,233 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:11,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:11,235 INFO L225 Difference]: With dead ends: 170 [2020-10-16 10:47:11,235 INFO L226 Difference]: Without dead ends: 168 [2020-10-16 10:47:11,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-16 10:47:11,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-16 10:47:11,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-16 10:47:11,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-16 10:47:11,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-16 10:47:11,239 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-16 10:47:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:11,239 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-16 10:47:11,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-16 10:47:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:11,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:11,240 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:11,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:11,451 INFO L429 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:11,451 INFO L82 PathProgramCache]: Analyzing trace with hash 2100676846, now seen corresponding path program 37 times [2020-10-16 10:47:11,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:11,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741952237] [2020-10-16 10:47:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:11,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741952237] [2020-10-16 10:47:11,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866649796] [2020-10-16 10:47:11,506 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:11,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:11,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:11,620 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:11,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:11,628 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:11,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:11,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397772471] [2020-10-16 10:47:11,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:11,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:11,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:11,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:11,630 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-16 10:47:11,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:11,954 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-16 10:47:11,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:47:11,955 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:11,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:11,957 INFO L225 Difference]: With dead ends: 177 [2020-10-16 10:47:11,957 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 10:47:11,957 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 [2020-10-16 10:47:11,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 10:47:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-16 10:47:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-16 10:47:11,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-16 10:47:11,965 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-16 10:47:11,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:11,965 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-16 10:47:11,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:11,965 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-16 10:47:11,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:11,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:11,966 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:12,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-16 10:47:12,177 INFO L429 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:12,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:12,177 INFO L82 PathProgramCache]: Analyzing trace with hash 2100677807, now seen corresponding path program 38 times [2020-10-16 10:47:12,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:12,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334658095] [2020-10-16 10:47:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:12,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:12,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334658095] [2020-10-16 10:47:12,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616451910] [2020-10-16 10:47:12,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:12,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:12,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:12,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:12,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:12,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:12,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:12,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:12,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:12,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823759508] [2020-10-16 10:47:12,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:12,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:12,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:12,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:12,364 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-16 10:47:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:12,724 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-16 10:47:12,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 10:47:12,724 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:12,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:12,726 INFO L225 Difference]: With dead ends: 190 [2020-10-16 10:47:12,726 INFO L226 Difference]: Without dead ends: 182 [2020-10-16 10:47:12,726 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 [2020-10-16 10:47:12,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-16 10:47:12,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-16 10:47:12,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-16 10:47:12,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-16 10:47:12,730 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-16 10:47:12,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:12,730 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-16 10:47:12,730 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-16 10:47:12,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:12,731 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:12,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:12,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-16 10:47:12,941 INFO L429 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:12,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:12,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2100706637, now seen corresponding path program 39 times [2020-10-16 10:47:12,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:12,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494751856] [2020-10-16 10:47:12,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:12,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:13,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:13,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494751856] [2020-10-16 10:47:13,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646802013] [2020-10-16 10:47:13,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:13,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:47:13,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:13,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:13,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:13,109 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:13,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:13,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:13,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86572740] [2020-10-16 10:47:13,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:13,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:13,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:13,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:13,120 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-16 10:47:13,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:13,462 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-16 10:47:13,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:47:13,462 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:13,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:13,464 INFO L225 Difference]: With dead ends: 180 [2020-10-16 10:47:13,464 INFO L226 Difference]: Without dead ends: 175 [2020-10-16 10:47:13,464 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 [2020-10-16 10:47:13,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-16 10:47:13,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-16 10:47:13,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 10:47:13,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-16 10:47:13,468 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-16 10:47:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:13,468 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-16 10:47:13,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-16 10:47:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:13,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:13,469 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:13,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-16 10:47:13,670 INFO L429 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:13,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:13,670 INFO L82 PathProgramCache]: Analyzing trace with hash 2107142237, now seen corresponding path program 40 times [2020-10-16 10:47:13,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:13,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255816809] [2020-10-16 10:47:13,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:13,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:13,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255816809] [2020-10-16 10:47:13,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670026832] [2020-10-16 10:47:13,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:13,790 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:13,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:13,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:13,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:13,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:13,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:13,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530406839] [2020-10-16 10:47:13,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:13,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:13,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:13,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:13,889 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-16 10:47:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:14,026 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-16 10:47:14,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:14,027 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:14,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:14,028 INFO L225 Difference]: With dead ends: 164 [2020-10-16 10:47:14,028 INFO L226 Difference]: Without dead ends: 162 [2020-10-16 10:47:14,029 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 [2020-10-16 10:47:14,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-16 10:47:14,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-16 10:47:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-16 10:47:14,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-16 10:47:14,034 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-16 10:47:14,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:14,034 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-16 10:47:14,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:14,034 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-16 10:47:14,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:14,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:14,035 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:14,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-16 10:47:14,245 INFO L429 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:14,245 INFO L82 PathProgramCache]: Analyzing trace with hash 2107143198, now seen corresponding path program 41 times [2020-10-16 10:47:14,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:14,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379291236] [2020-10-16 10:47:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:14,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:14,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379291236] [2020-10-16 10:47:14,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497154551] [2020-10-16 10:47:14,306 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:14,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:14,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:14,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:14,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:14,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:14,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:14,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964338945] [2020-10-16 10:47:14,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:14,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:14,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:14,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:14,439 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-16 10:47:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:14,594 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-16 10:47:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:47:14,595 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:14,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:14,596 INFO L225 Difference]: With dead ends: 161 [2020-10-16 10:47:14,597 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 10:47:14,597 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 [2020-10-16 10:47:14,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 10:47:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-16 10:47:14,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 10:47:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-16 10:47:14,601 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-16 10:47:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:14,601 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-16 10:47:14,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:14,601 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-16 10:47:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:14,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:14,602 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:14,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-16 10:47:14,812 INFO L429 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:14,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:14,812 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698027, now seen corresponding path program 42 times [2020-10-16 10:47:14,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:14,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367513525] [2020-10-16 10:47:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:14,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367513525] [2020-10-16 10:47:14,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168370645] [2020-10-16 10:47:14,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:14,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:47:14,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:14,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:14,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:15,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:15,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:15,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127122183] [2020-10-16 10:47:15,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:15,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:15,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:15,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:15,006 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-16 10:47:15,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:15,193 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-16 10:47:15,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:15,193 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:15,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:15,195 INFO L225 Difference]: With dead ends: 165 [2020-10-16 10:47:15,195 INFO L226 Difference]: Without dead ends: 163 [2020-10-16 10:47:15,195 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 [2020-10-16 10:47:15,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-16 10:47:15,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-16 10:47:15,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 10:47:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-16 10:47:15,198 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-16 10:47:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:15,199 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-16 10:47:15,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-16 10:47:15,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:15,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:15,199 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:15,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-16 10:47:15,400 INFO L429 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:15,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:15,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2127698988, now seen corresponding path program 43 times [2020-10-16 10:47:15,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:15,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098071141] [2020-10-16 10:47:15,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:15,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098071141] [2020-10-16 10:47:15,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788156244] [2020-10-16 10:47:15,459 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:15,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:15,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:15,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:15,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:15,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505953401] [2020-10-16 10:47:15,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:15,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:15,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:15,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:15,591 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-16 10:47:15,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:15,786 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-16 10:47:15,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:15,787 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:15,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:15,788 INFO L225 Difference]: With dead ends: 167 [2020-10-16 10:47:15,788 INFO L226 Difference]: Without dead ends: 165 [2020-10-16 10:47:15,789 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 [2020-10-16 10:47:15,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-16 10:47:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-16 10:47:15,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 10:47:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-16 10:47:15,792 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-16 10:47:15,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:15,792 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-16 10:47:15,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-16 10:47:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:15,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:15,793 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:15,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:15,999 INFO L429 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:15,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:15,999 INFO L82 PathProgramCache]: Analyzing trace with hash 2128361117, now seen corresponding path program 44 times [2020-10-16 10:47:16,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:16,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715942088] [2020-10-16 10:47:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:16,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:16,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:16,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715942088] [2020-10-16 10:47:16,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124485791] [2020-10-16 10:47:16,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:16,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:16,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:16,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:16,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:16,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:16,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:16,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877689246] [2020-10-16 10:47:16,210 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:16,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:16,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:16,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:16,211 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-16 10:47:16,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:16,473 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-16 10:47:16,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:47:16,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:16,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:16,475 INFO L225 Difference]: With dead ends: 168 [2020-10-16 10:47:16,475 INFO L226 Difference]: Without dead ends: 166 [2020-10-16 10:47:16,476 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 [2020-10-16 10:47:16,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-16 10:47:16,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-16 10:47:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 10:47:16,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-16 10:47:16,479 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-16 10:47:16,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:16,479 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-16 10:47:16,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:16,479 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-16 10:47:16,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:16,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:16,480 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:16,680 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:16,681 INFO L429 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:16,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:16,681 INFO L82 PathProgramCache]: Analyzing trace with hash 2128382476, now seen corresponding path program 45 times [2020-10-16 10:47:16,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:16,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6718422] [2020-10-16 10:47:16,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:16,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:16,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6718422] [2020-10-16 10:47:16,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891045958] [2020-10-16 10:47:16,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:16,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:16,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:16,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:16,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:16,839 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:16,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:16,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:16,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:16,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458666996] [2020-10-16 10:47:16,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:16,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:16,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:16,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:16,851 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-16 10:47:17,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:17,042 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-16 10:47:17,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:17,043 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:17,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:17,045 INFO L225 Difference]: With dead ends: 160 [2020-10-16 10:47:17,045 INFO L226 Difference]: Without dead ends: 155 [2020-10-16 10:47:17,045 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 [2020-10-16 10:47:17,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-16 10:47:17,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-16 10:47:17,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-16 10:47:17,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-16 10:47:17,049 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-16 10:47:17,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:17,049 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-16 10:47:17,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:17,049 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-16 10:47:17,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:17,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:17,050 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:17,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:17,259 INFO L429 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:17,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:17,260 INFO L82 PathProgramCache]: Analyzing trace with hash 2128383437, now seen corresponding path program 46 times [2020-10-16 10:47:17,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:17,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814541006] [2020-10-16 10:47:17,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:17,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:17,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:17,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814541006] [2020-10-16 10:47:17,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825347593] [2020-10-16 10:47:17,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:17,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:17,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:17,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:17,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:17,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:17,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:17,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:17,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:17,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323996581] [2020-10-16 10:47:17,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:17,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:17,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:17,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:17,566 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-16 10:47:17,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:17,989 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-16 10:47:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:47:17,990 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:17,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:17,991 INFO L225 Difference]: With dead ends: 189 [2020-10-16 10:47:17,991 INFO L226 Difference]: Without dead ends: 181 [2020-10-16 10:47:17,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-16 10:47:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-16 10:47:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-16 10:47:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-16 10:47:17,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-16 10:47:17,996 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-16 10:47:17,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:17,997 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-16 10:47:17,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:17,997 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-16 10:47:17,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:17,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:17,998 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:18,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:18,198 INFO L429 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:18,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:18,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2128390908, now seen corresponding path program 47 times [2020-10-16 10:47:18,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:18,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177160035] [2020-10-16 10:47:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:18,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177160035] [2020-10-16 10:47:18,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271268957] [2020-10-16 10:47:18,253 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:18,293 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:18,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:18,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:18,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:18,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:18,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:18,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096818213] [2020-10-16 10:47:18,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:18,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:18,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:18,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:18,370 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-16 10:47:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:18,609 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-16 10:47:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:47:18,609 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:18,611 INFO L225 Difference]: With dead ends: 169 [2020-10-16 10:47:18,611 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 10:47:18,611 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 [2020-10-16 10:47:18,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 10:47:18,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-16 10:47:18,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 10:47:18,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-16 10:47:18,614 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-16 10:47:18,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:18,614 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-16 10:47:18,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-16 10:47:18,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:18,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:18,614 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:18,816 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-16 10:47:18,816 INFO L429 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:18,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:18,817 INFO L82 PathProgramCache]: Analyzing trace with hash 2128412267, now seen corresponding path program 48 times [2020-10-16 10:47:18,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:18,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641641420] [2020-10-16 10:47:18,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:18,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:18,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641641420] [2020-10-16 10:47:18,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787716535] [2020-10-16 10:47:18,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:18,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:18,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:18,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:18,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:18,973 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:18,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:18,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:18,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314242883] [2020-10-16 10:47:18,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:18,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:18,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:18,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:18,981 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-16 10:47:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:19,300 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-16 10:47:19,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 10:47:19,300 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:19,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:19,302 INFO L225 Difference]: With dead ends: 192 [2020-10-16 10:47:19,302 INFO L226 Difference]: Without dead ends: 184 [2020-10-16 10:47:19,302 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 [2020-10-16 10:47:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-16 10:47:19,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-16 10:47:19,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-16 10:47:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-16 10:47:19,306 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-16 10:47:19,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:19,307 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-16 10:47:19,307 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-16 10:47:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:19,308 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:19,308 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:19,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:19,518 INFO L429 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:19,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2128413228, now seen corresponding path program 49 times [2020-10-16 10:47:19,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:19,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326833863] [2020-10-16 10:47:19,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:19,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:19,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326833863] [2020-10-16 10:47:19,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810464776] [2020-10-16 10:47:19,572 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:19,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-16 10:47:19,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:19,687 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:19,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:19,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:19,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-16 10:47:19,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099721947] [2020-10-16 10:47:19,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 10:47:19,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:19,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 10:47:19,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-16 10:47:19,698 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-16 10:47:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:20,011 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-16 10:47:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:47:20,011 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-16 10:47:20,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:20,013 INFO L225 Difference]: With dead ends: 180 [2020-10-16 10:47:20,013 INFO L226 Difference]: Without dead ends: 175 [2020-10-16 10:47:20,014 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 [2020-10-16 10:47:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-16 10:47:20,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-16 10:47:20,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-16 10:47:20,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-16 10:47:20,017 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-16 10:47:20,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:20,017 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-16 10:47:20,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 10:47:20,017 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-16 10:47:20,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:20,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:20,018 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:20,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-16 10:47:20,224 INFO L429 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:20,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:20,225 INFO L82 PathProgramCache]: Analyzing trace with hash 609848181, now seen corresponding path program 5 times [2020-10-16 10:47:20,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:20,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938016216] [2020-10-16 10:47:20,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:20,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938016216] [2020-10-16 10:47:20,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891009881] [2020-10-16 10:47:20,292 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:20,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:47:20,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:20,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:20,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:20,427 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:20,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:20,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 10:47:20,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148252515] [2020-10-16 10:47:20,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 10:47:20,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:20,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 10:47:20,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-16 10:47:20,452 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-16 10:47:20,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:20,601 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-16 10:47:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:47:20,602 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-16 10:47:20,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:20,604 INFO L225 Difference]: With dead ends: 164 [2020-10-16 10:47:20,604 INFO L226 Difference]: Without dead ends: 159 [2020-10-16 10:47:20,604 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 [2020-10-16 10:47:20,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-16 10:47:20,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-16 10:47:20,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-16 10:47:20,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-16 10:47:20,613 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-16 10:47:20,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:20,613 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-16 10:47:20,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 10:47:20,613 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-16 10:47:20,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:20,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:20,614 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:20,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:20,816 INFO L429 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:20,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1447872776, now seen corresponding path program 15 times [2020-10-16 10:47:20,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:20,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230786561] [2020-10-16 10:47:20,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:20,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:20,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230786561] [2020-10-16 10:47:20,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211465173] [2020-10-16 10:47:20,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:20,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:47:20,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:20,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:20,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:21,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:21,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:21,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:21,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127775013] [2020-10-16 10:47:21,112 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:21,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:21,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:21,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:21,113 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-16 10:47:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:21,163 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-16 10:47:21,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:47:21,164 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-16 10:47:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:21,168 INFO L225 Difference]: With dead ends: 156 [2020-10-16 10:47:21,168 INFO L226 Difference]: Without dead ends: 153 [2020-10-16 10:47:21,168 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 [2020-10-16 10:47:21,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-16 10:47:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-16 10:47:21,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-16 10:47:21,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-16 10:47:21,173 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-16 10:47:21,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:21,173 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-16 10:47:21,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-16 10:47:21,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:21,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:21,174 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:21,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-16 10:47:21,384 INFO L429 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:21,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1985246760, now seen corresponding path program 16 times [2020-10-16 10:47:21,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:21,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791269747] [2020-10-16 10:47:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:21,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791269747] [2020-10-16 10:47:21,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899130418] [2020-10-16 10:47:21,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:21,520 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:21,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:21,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:21,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:21,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:21,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:21,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:21,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812838445] [2020-10-16 10:47:21,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:21,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:21,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:21,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:21,637 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-16 10:47:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:21,704 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-16 10:47:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:47:21,705 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-16 10:47:21,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:21,707 INFO L225 Difference]: With dead ends: 170 [2020-10-16 10:47:21,707 INFO L226 Difference]: Without dead ends: 167 [2020-10-16 10:47:21,707 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 [2020-10-16 10:47:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-16 10:47:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-16 10:47:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-16 10:47:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-16 10:47:21,712 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-16 10:47:21,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:21,714 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-16 10:47:21,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:21,714 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-16 10:47:21,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:21,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:21,715 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:21,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:21,926 INFO L429 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:21,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1644785416, now seen corresponding path program 17 times [2020-10-16 10:47:21,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:21,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974865128] [2020-10-16 10:47:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:22,021 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:22,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974865128] [2020-10-16 10:47:22,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683097107] [2020-10-16 10:47:22,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:22,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:47:22,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:22,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:22,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:22,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:22,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:22,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852957805] [2020-10-16 10:47:22,171 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:22,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:22,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:22,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:22,171 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-16 10:47:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:22,256 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-16 10:47:22,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:47:22,257 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-16 10:47:22,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:22,258 INFO L225 Difference]: With dead ends: 169 [2020-10-16 10:47:22,259 INFO L226 Difference]: Without dead ends: 166 [2020-10-16 10:47:22,259 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 [2020-10-16 10:47:22,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-16 10:47:22,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-16 10:47:22,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 10:47:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-16 10:47:22,262 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-16 10:47:22,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:22,263 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-16 10:47:22,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:22,263 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-16 10:47:22,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:22,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:22,263 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:22,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:22,471 INFO L429 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:22,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:22,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1623335896, now seen corresponding path program 18 times [2020-10-16 10:47:22,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:22,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133849082] [2020-10-16 10:47:22,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:22,565 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:22,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133849082] [2020-10-16 10:47:22,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433516638] [2020-10-16 10:47:22,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:22,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:47:22,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:22,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:22,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:22,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:22,725 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:22,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232965136] [2020-10-16 10:47:22,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:22,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:22,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:22,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:22,726 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-16 10:47:22,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:22,839 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-16 10:47:22,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:47:22,840 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-16 10:47:22,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:22,841 INFO L225 Difference]: With dead ends: 168 [2020-10-16 10:47:22,841 INFO L226 Difference]: Without dead ends: 165 [2020-10-16 10:47:22,842 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 [2020-10-16 10:47:22,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-16 10:47:22,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-16 10:47:22,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 10:47:22,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-16 10:47:22,845 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-16 10:47:22,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:22,845 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-16 10:47:22,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:22,846 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-16 10:47:22,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:22,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:22,846 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:23,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-16 10:47:23,047 INFO L429 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:23,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:23,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1622643976, now seen corresponding path program 19 times [2020-10-16 10:47:23,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:23,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146130208] [2020-10-16 10:47:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:23,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146130208] [2020-10-16 10:47:23,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288790886] [2020-10-16 10:47:23,125 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:23,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:23,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:23,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:23,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:23,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:23,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338506736] [2020-10-16 10:47:23,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:23,296 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-16 10:47:23,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:23,431 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-16 10:47:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:23,431 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-16 10:47:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:23,433 INFO L225 Difference]: With dead ends: 167 [2020-10-16 10:47:23,433 INFO L226 Difference]: Without dead ends: 164 [2020-10-16 10:47:23,433 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 [2020-10-16 10:47:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-16 10:47:23,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-16 10:47:23,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 10:47:23,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-16 10:47:23,437 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-16 10:47:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:23,437 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-16 10:47:23,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-16 10:47:23,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 10:47:23,437 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:23,438 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:23,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:23,638 INFO L429 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:23,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:23,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1622621656, now seen corresponding path program 20 times [2020-10-16 10:47:23,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:23,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85604138] [2020-10-16 10:47:23,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:23,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85604138] [2020-10-16 10:47:23,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466660616] [2020-10-16 10:47:23,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:23,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:23,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:23,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:23,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:23,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:23,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:23,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:23,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:23,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593774228] [2020-10-16 10:47:23,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:23,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:23,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:23,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:23,868 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-16 10:47:24,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:24,077 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-16 10:47:24,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:47:24,078 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-16 10:47:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:24,079 INFO L225 Difference]: With dead ends: 176 [2020-10-16 10:47:24,080 INFO L226 Difference]: Without dead ends: 170 [2020-10-16 10:47:24,080 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 [2020-10-16 10:47:24,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-16 10:47:24,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-16 10:47:24,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-16 10:47:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-16 10:47:24,085 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-16 10:47:24,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:24,085 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-16 10:47:24,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-16 10:47:24,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:24,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:24,086 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:24,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:24,287 INFO L429 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:24,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:24,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1730118241, now seen corresponding path program 50 times [2020-10-16 10:47:24,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:24,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22299983] [2020-10-16 10:47:24,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:24,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:24,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22299983] [2020-10-16 10:47:24,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499747535] [2020-10-16 10:47:24,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:24,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:24,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:24,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:24,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:24,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:24,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:24,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158035834] [2020-10-16 10:47:24,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:24,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:24,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:24,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:24,642 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-16 10:47:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:24,711 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-16 10:47:24,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-16 10:47:24,712 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:24,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:24,713 INFO L225 Difference]: With dead ends: 163 [2020-10-16 10:47:24,713 INFO L226 Difference]: Without dead ends: 161 [2020-10-16 10:47:24,713 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 [2020-10-16 10:47:24,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-16 10:47:24,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-16 10:47:24,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 10:47:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-16 10:47:24,717 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-16 10:47:24,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:24,717 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-16 10:47:24,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-16 10:47:24,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:24,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:24,718 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:24,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-16 10:47:24,927 INFO L429 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:24,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:24,928 INFO L82 PathProgramCache]: Analyzing trace with hash 1730119202, now seen corresponding path program 51 times [2020-10-16 10:47:24,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:24,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45113916] [2020-10-16 10:47:24,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:25,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45113916] [2020-10-16 10:47:25,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300889217] [2020-10-16 10:47:25,009 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:25,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:25,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:25,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:25,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:25,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:25,191 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:25,191 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:25,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361049863] [2020-10-16 10:47:25,192 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:25,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:25,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:25,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:25,192 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-16 10:47:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:25,338 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-16 10:47:25,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:47:25,339 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:25,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:25,341 INFO L225 Difference]: With dead ends: 172 [2020-10-16 10:47:25,341 INFO L226 Difference]: Without dead ends: 170 [2020-10-16 10:47:25,341 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 [2020-10-16 10:47:25,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-16 10:47:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-16 10:47:25,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 10:47:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-16 10:47:25,348 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-16 10:47:25,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:25,348 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-16 10:47:25,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:25,348 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-16 10:47:25,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:25,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:25,349 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:25,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:25,555 INFO L429 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:25,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1730148032, now seen corresponding path program 52 times [2020-10-16 10:47:25,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:25,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623321865] [2020-10-16 10:47:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:25,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:25,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623321865] [2020-10-16 10:47:25,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067111521] [2020-10-16 10:47:25,636 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:25,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:25,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:25,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:25,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:25,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:25,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:25,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490190798] [2020-10-16 10:47:25,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:25,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:25,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:25,885 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-16 10:47:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:26,069 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-16 10:47:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:47:26,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:26,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:26,070 INFO L225 Difference]: With dead ends: 179 [2020-10-16 10:47:26,071 INFO L226 Difference]: Without dead ends: 177 [2020-10-16 10:47:26,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-10-16 10:47:26,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-16 10:47:26,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-16 10:47:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-16 10:47:26,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-16 10:47:26,074 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-16 10:47:26,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:26,075 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-16 10:47:26,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-16 10:47:26,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:26,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:26,076 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:26,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-16 10:47:26,284 INFO L429 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:26,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:26,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041762, now seen corresponding path program 53 times [2020-10-16 10:47:26,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:26,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444017395] [2020-10-16 10:47:26,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:26,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444017395] [2020-10-16 10:47:26,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364094810] [2020-10-16 10:47:26,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:26,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:26,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:26,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:26,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:26,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:26,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:26,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997821288] [2020-10-16 10:47:26,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:26,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:26,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:26,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:26,530 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-16 10:47:26,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:26,707 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-16 10:47:26,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:47:26,708 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:26,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:26,709 INFO L225 Difference]: With dead ends: 179 [2020-10-16 10:47:26,709 INFO L226 Difference]: Without dead ends: 177 [2020-10-16 10:47:26,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-16 10:47:26,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-16 10:47:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-16 10:47:26,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 10:47:26,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-16 10:47:26,713 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-16 10:47:26,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:26,714 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-16 10:47:26,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:26,714 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-16 10:47:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:26,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:26,714 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:26,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-16 10:47:26,916 INFO L429 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:26,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1731042723, now seen corresponding path program 54 times [2020-10-16 10:47:26,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:26,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105635495] [2020-10-16 10:47:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:26,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105635495] [2020-10-16 10:47:26,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164995485] [2020-10-16 10:47:26,998 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:27,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:27,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:27,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:27,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:27,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:27,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:27,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387228862] [2020-10-16 10:47:27,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:27,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:27,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:27,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:27,138 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-16 10:47:27,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:27,331 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-16 10:47:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:27,331 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:27,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:27,333 INFO L225 Difference]: With dead ends: 184 [2020-10-16 10:47:27,333 INFO L226 Difference]: Without dead ends: 182 [2020-10-16 10:47:27,333 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 [2020-10-16 10:47:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-16 10:47:27,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-16 10:47:27,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 10:47:27,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-16 10:47:27,337 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-16 10:47:27,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:27,337 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-16 10:47:27,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:27,337 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-16 10:47:27,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:27,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:27,338 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:27,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-16 10:47:27,548 INFO L429 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:27,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1731071553, now seen corresponding path program 55 times [2020-10-16 10:47:27,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:27,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197821172] [2020-10-16 10:47:27,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:27,633 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:27,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197821172] [2020-10-16 10:47:27,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165367230] [2020-10-16 10:47:27,634 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:27,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:27,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:27,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:27,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:27,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981379350] [2020-10-16 10:47:27,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:27,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:27,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:27,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:27,807 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-16 10:47:28,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:28,058 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-16 10:47:28,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:28,059 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:28,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:28,060 INFO L225 Difference]: With dead ends: 179 [2020-10-16 10:47:28,060 INFO L226 Difference]: Without dead ends: 177 [2020-10-16 10:47:28,060 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 [2020-10-16 10:47:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-16 10:47:28,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-16 10:47:28,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-16 10:47:28,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-16 10:47:28,064 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-16 10:47:28,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:28,064 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-16 10:47:28,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:28,064 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-16 10:47:28,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:28,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:28,065 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:28,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:28,275 INFO L429 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:28,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:28,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1758747392, now seen corresponding path program 56 times [2020-10-16 10:47:28,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:28,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399347475] [2020-10-16 10:47:28,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:28,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399347475] [2020-10-16 10:47:28,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800858369] [2020-10-16 10:47:28,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:28,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:28,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:28,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:28,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:28,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:28,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:28,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:28,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955438113] [2020-10-16 10:47:28,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:28,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:28,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:28,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:28,519 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-16 10:47:28,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:28,675 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-16 10:47:28,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:47:28,675 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:28,677 INFO L225 Difference]: With dead ends: 176 [2020-10-16 10:47:28,677 INFO L226 Difference]: Without dead ends: 174 [2020-10-16 10:47:28,677 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 [2020-10-16 10:47:28,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-16 10:47:28,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-16 10:47:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 10:47:28,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-16 10:47:28,681 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-16 10:47:28,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:28,681 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-16 10:47:28,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:28,681 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-16 10:47:28,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:28,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:28,681 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:28,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:28,882 INFO L429 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:28,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:28,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1758748353, now seen corresponding path program 57 times [2020-10-16 10:47:28,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:28,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809525111] [2020-10-16 10:47:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:28,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809525111] [2020-10-16 10:47:28,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568963398] [2020-10-16 10:47:28,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:29,025 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:47:29,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:29,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:29,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:29,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:29,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:29,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:29,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999945495] [2020-10-16 10:47:29,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:29,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:29,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:29,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:29,146 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-16 10:47:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:29,343 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-16 10:47:29,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:29,344 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:29,346 INFO L225 Difference]: With dead ends: 185 [2020-10-16 10:47:29,346 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 10:47:29,346 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 [2020-10-16 10:47:29,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 10:47:29,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-16 10:47:29,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 10:47:29,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-16 10:47:29,349 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-16 10:47:29,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:29,349 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-16 10:47:29,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:29,349 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-16 10:47:29,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:29,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:29,350 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:29,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:29,559 INFO L429 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:29,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:29,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1758777183, now seen corresponding path program 58 times [2020-10-16 10:47:29,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:29,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005151811] [2020-10-16 10:47:29,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:29,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:29,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005151811] [2020-10-16 10:47:29,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584221500] [2020-10-16 10:47:29,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:29,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:29,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:29,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:29,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:29,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:29,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:29,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952497983] [2020-10-16 10:47:29,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:29,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:29,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:29,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:29,797 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-16 10:47:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:30,001 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-16 10:47:30,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:30,002 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:30,003 INFO L225 Difference]: With dead ends: 185 [2020-10-16 10:47:30,004 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 10:47:30,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-16 10:47:30,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 10:47:30,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-16 10:47:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-16 10:47:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-16 10:47:30,008 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-16 10:47:30,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:30,008 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-16 10:47:30,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:30,008 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-16 10:47:30,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:30,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:30,009 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:30,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:30,210 INFO L429 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:30,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash 9395951, now seen corresponding path program 59 times [2020-10-16 10:47:30,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:30,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895933942] [2020-10-16 10:47:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:30,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:30,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895933942] [2020-10-16 10:47:30,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809674384] [2020-10-16 10:47:30,366 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:30,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:47:30,427 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:30,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:30,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:30,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:30,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:30,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180192681] [2020-10-16 10:47:30,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:30,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:30,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:30,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:30,601 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-16 10:47:30,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:30,681 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-16 10:47:30,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:47:30,682 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:30,683 INFO L225 Difference]: With dead ends: 182 [2020-10-16 10:47:30,683 INFO L226 Difference]: Without dead ends: 180 [2020-10-16 10:47:30,684 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-16 10:47:30,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-16 10:47:30,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-16 10:47:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 10:47:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-16 10:47:30,688 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-16 10:47:30,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:30,688 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-16 10:47:30,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:30,689 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-16 10:47:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:30,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:30,689 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:30,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-16 10:47:30,900 INFO L429 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:30,900 INFO L82 PathProgramCache]: Analyzing trace with hash 9396912, now seen corresponding path program 60 times [2020-10-16 10:47:30,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:30,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43182890] [2020-10-16 10:47:30,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:31,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:31,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43182890] [2020-10-16 10:47:31,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551702656] [2020-10-16 10:47:31,012 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:31,064 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:31,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:31,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:31,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:31,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:31,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:31,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649795699] [2020-10-16 10:47:31,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:31,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:31,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:31,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:31,184 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-16 10:47:31,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:31,360 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-16 10:47:31,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 10:47:31,361 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:31,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:31,363 INFO L225 Difference]: With dead ends: 185 [2020-10-16 10:47:31,363 INFO L226 Difference]: Without dead ends: 183 [2020-10-16 10:47:31,363 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 [2020-10-16 10:47:31,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-16 10:47:31,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-16 10:47:31,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:47:31,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-16 10:47:31,368 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-16 10:47:31,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:31,368 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-16 10:47:31,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:31,369 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-16 10:47:31,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:31,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:31,369 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:31,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:31,572 INFO L429 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:31,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:31,572 INFO L82 PathProgramCache]: Analyzing trace with hash 9425742, now seen corresponding path program 61 times [2020-10-16 10:47:31,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:31,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995109093] [2020-10-16 10:47:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:31,661 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:31,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995109093] [2020-10-16 10:47:31,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974668374] [2020-10-16 10:47:31,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:31,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:31,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:31,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:31,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:31,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23776908] [2020-10-16 10:47:31,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:31,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:31,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:31,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:31,865 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-16 10:47:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:32,088 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-16 10:47:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 10:47:32,089 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:32,091 INFO L225 Difference]: With dead ends: 191 [2020-10-16 10:47:32,091 INFO L226 Difference]: Without dead ends: 189 [2020-10-16 10:47:32,091 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 [2020-10-16 10:47:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-16 10:47:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-16 10:47:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 10:47:32,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-16 10:47:32,095 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-16 10:47:32,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:32,095 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-16 10:47:32,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-16 10:47:32,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:32,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:32,095 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:32,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:32,296 INFO L429 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:32,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:32,297 INFO L82 PathProgramCache]: Analyzing trace with hash 10319472, now seen corresponding path program 62 times [2020-10-16 10:47:32,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:32,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270573055] [2020-10-16 10:47:32,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:32,372 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:32,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270573055] [2020-10-16 10:47:32,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398507080] [2020-10-16 10:47:32,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:32,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:32,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:32,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:32,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:32,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:32,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:32,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:32,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353666533] [2020-10-16 10:47:32,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:32,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:32,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:32,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:32,607 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-16 10:47:32,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:32,922 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-16 10:47:32,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:47:32,923 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:32,925 INFO L225 Difference]: With dead ends: 187 [2020-10-16 10:47:32,925 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 10:47:32,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-16 10:47:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 10:47:32,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-16 10:47:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:47:32,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-16 10:47:32,930 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-16 10:47:32,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:32,931 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-16 10:47:32,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:32,931 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-16 10:47:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:32,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:32,932 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:33,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-16 10:47:33,146 INFO L429 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:33,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:33,147 INFO L82 PathProgramCache]: Analyzing trace with hash 10320433, now seen corresponding path program 63 times [2020-10-16 10:47:33,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:33,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95390446] [2020-10-16 10:47:33,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:33,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95390446] [2020-10-16 10:47:33,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292869231] [2020-10-16 10:47:33,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:33,290 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:33,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:33,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:33,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:33,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:33,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:33,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:33,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302301824] [2020-10-16 10:47:33,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:33,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:33,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:33,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:33,394 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-16 10:47:33,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:33,647 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-16 10:47:33,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:33,647 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:33,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:33,649 INFO L225 Difference]: With dead ends: 198 [2020-10-16 10:47:33,649 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 10:47:33,649 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 [2020-10-16 10:47:33,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 10:47:33,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-16 10:47:33,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:47:33,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-16 10:47:33,652 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-16 10:47:33,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:33,653 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-16 10:47:33,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:33,653 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-16 10:47:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:33,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:33,653 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:33,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:33,854 INFO L429 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:33,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash 10349263, now seen corresponding path program 64 times [2020-10-16 10:47:33,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:33,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644073448] [2020-10-16 10:47:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:33,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:33,935 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:33,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644073448] [2020-10-16 10:47:33,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268953445] [2020-10-16 10:47:33,936 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:33,974 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:33,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:33,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:33,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:34,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:34,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:34,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790402917] [2020-10-16 10:47:34,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:34,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:34,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:34,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:34,097 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-16 10:47:34,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:34,362 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-16 10:47:34,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:34,363 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:34,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:34,364 INFO L225 Difference]: With dead ends: 189 [2020-10-16 10:47:34,364 INFO L226 Difference]: Without dead ends: 187 [2020-10-16 10:47:34,365 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 [2020-10-16 10:47:34,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-16 10:47:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-16 10:47:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 10:47:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-16 10:47:34,368 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-16 10:47:34,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:34,368 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-16 10:47:34,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:34,368 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-16 10:47:34,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:34,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:34,369 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:34,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-16 10:47:34,570 INFO L429 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:34,570 INFO L82 PathProgramCache]: Analyzing trace with hash 646625441, now seen corresponding path program 65 times [2020-10-16 10:47:34,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:34,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545783227] [2020-10-16 10:47:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:34,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:34,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:34,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545783227] [2020-10-16 10:47:34,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108928908] [2020-10-16 10:47:34,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:34,714 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:47:34,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:34,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:34,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:34,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:34,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:34,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:34,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952027628] [2020-10-16 10:47:34,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:34,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:34,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:34,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:34,831 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-16 10:47:34,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:34,920 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-16 10:47:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:47:34,921 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:34,922 INFO L225 Difference]: With dead ends: 178 [2020-10-16 10:47:34,922 INFO L226 Difference]: Without dead ends: 176 [2020-10-16 10:47:34,923 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 [2020-10-16 10:47:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-16 10:47:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-16 10:47:34,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-16 10:47:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-16 10:47:34,926 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-16 10:47:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:34,926 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-16 10:47:34,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:34,926 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-16 10:47:34,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:34,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:34,927 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:35,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:35,128 INFO L429 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:35,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:35,128 INFO L82 PathProgramCache]: Analyzing trace with hash 646626402, now seen corresponding path program 66 times [2020-10-16 10:47:35,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:35,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619506930] [2020-10-16 10:47:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:35,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619506930] [2020-10-16 10:47:35,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122026996] [2020-10-16 10:47:35,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:35,252 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:35,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:35,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:35,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:35,369 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:35,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:35,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:35,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285119050] [2020-10-16 10:47:35,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:35,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:35,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:35,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:35,370 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-16 10:47:35,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:35,560 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-16 10:47:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:47:35,561 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:35,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:35,562 INFO L225 Difference]: With dead ends: 193 [2020-10-16 10:47:35,562 INFO L226 Difference]: Without dead ends: 191 [2020-10-16 10:47:35,563 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 [2020-10-16 10:47:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-16 10:47:35,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-16 10:47:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 10:47:35,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-16 10:47:35,566 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-16 10:47:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:35,566 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-16 10:47:35,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:35,566 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-16 10:47:35,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:35,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:35,572 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:35,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-16 10:47:35,774 INFO L429 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:35,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:35,775 INFO L82 PathProgramCache]: Analyzing trace with hash 646655232, now seen corresponding path program 67 times [2020-10-16 10:47:35,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:35,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107199039] [2020-10-16 10:47:35,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:35,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107199039] [2020-10-16 10:47:35,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672926590] [2020-10-16 10:47:35,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:35,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:35,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:36,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:36,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:36,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233573134] [2020-10-16 10:47:36,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:36,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:36,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:36,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:36,037 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-16 10:47:36,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:36,283 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-16 10:47:36,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:47:36,283 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:36,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:36,285 INFO L225 Difference]: With dead ends: 195 [2020-10-16 10:47:36,285 INFO L226 Difference]: Without dead ends: 193 [2020-10-16 10:47:36,285 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 [2020-10-16 10:47:36,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-16 10:47:36,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-16 10:47:36,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 10:47:36,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-16 10:47:36,288 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-16 10:47:36,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:36,288 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-16 10:47:36,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:36,288 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-16 10:47:36,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:36,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:36,289 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:36,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:36,490 INFO L429 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:36,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:36,490 INFO L82 PathProgramCache]: Analyzing trace with hash 667181231, now seen corresponding path program 68 times [2020-10-16 10:47:36,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:36,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775936986] [2020-10-16 10:47:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:36,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775936986] [2020-10-16 10:47:36,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658743419] [2020-10-16 10:47:36,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:36,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:36,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:36,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:36,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:36,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:36,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:36,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:36,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159761850] [2020-10-16 10:47:36,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:36,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:36,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:36,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:36,737 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-16 10:47:36,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:36,846 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-16 10:47:36,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:47:36,847 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:36,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:36,848 INFO L225 Difference]: With dead ends: 174 [2020-10-16 10:47:36,848 INFO L226 Difference]: Without dead ends: 172 [2020-10-16 10:47:36,849 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 [2020-10-16 10:47:36,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-16 10:47:36,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-16 10:47:36,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:47:36,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-16 10:47:36,852 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-16 10:47:36,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:36,852 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-16 10:47:36,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:36,852 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-16 10:47:36,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:36,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:36,852 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:37,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-16 10:47:37,053 INFO L429 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:37,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:37,054 INFO L82 PathProgramCache]: Analyzing trace with hash 667182192, now seen corresponding path program 69 times [2020-10-16 10:47:37,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:37,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619461264] [2020-10-16 10:47:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:37,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619461264] [2020-10-16 10:47:37,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695041571] [2020-10-16 10:47:37,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:37,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:37,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:37,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:37,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:37,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:37,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:37,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:37,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061669988] [2020-10-16 10:47:37,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:37,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:37,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:37,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:37,288 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-16 10:47:37,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:37,510 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-16 10:47:37,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:37,511 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:37,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:37,512 INFO L225 Difference]: With dead ends: 189 [2020-10-16 10:47:37,512 INFO L226 Difference]: Without dead ends: 187 [2020-10-16 10:47:37,513 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 [2020-10-16 10:47:37,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-16 10:47:37,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-16 10:47:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 10:47:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-16 10:47:37,516 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-16 10:47:37,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:37,516 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-16 10:47:37,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-16 10:47:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:37,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:37,517 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:37,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:37,718 INFO L429 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:37,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:37,719 INFO L82 PathProgramCache]: Analyzing trace with hash 667844321, now seen corresponding path program 70 times [2020-10-16 10:47:37,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:37,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369725893] [2020-10-16 10:47:37,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:37,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:37,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369725893] [2020-10-16 10:47:37,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839356632] [2020-10-16 10:47:37,802 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:37,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:37,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:37,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:37,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:37,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:37,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:37,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697678388] [2020-10-16 10:47:37,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:37,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:37,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:37,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:37,954 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-16 10:47:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:38,089 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-16 10:47:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:47:38,089 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:38,091 INFO L225 Difference]: With dead ends: 175 [2020-10-16 10:47:38,091 INFO L226 Difference]: Without dead ends: 173 [2020-10-16 10:47:38,091 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 [2020-10-16 10:47:38,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-16 10:47:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-16 10:47:38,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-16 10:47:38,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-16 10:47:38,095 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-16 10:47:38,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:38,095 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-16 10:47:38,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:38,095 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-16 10:47:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:38,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:38,096 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:38,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:38,298 INFO L429 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:38,298 INFO L82 PathProgramCache]: Analyzing trace with hash 667866641, now seen corresponding path program 71 times [2020-10-16 10:47:38,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:38,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113298801] [2020-10-16 10:47:38,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:38,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:38,370 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:38,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113298801] [2020-10-16 10:47:38,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241804773] [2020-10-16 10:47:38,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:38,411 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:47:38,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:38,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:38,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:38,515 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:38,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:38,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:38,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34911428] [2020-10-16 10:47:38,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:38,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:38,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:38,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:38,550 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-16 10:47:38,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:38,887 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-16 10:47:38,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:47:38,888 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:38,890 INFO L225 Difference]: With dead ends: 195 [2020-10-16 10:47:38,890 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 10:47:38,890 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 [2020-10-16 10:47:38,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 10:47:38,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-16 10:47:38,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-16 10:47:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-16 10:47:38,894 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-16 10:47:38,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:38,894 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-16 10:47:38,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:38,894 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-16 10:47:38,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:38,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:38,895 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:39,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:39,096 INFO L429 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:39,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:39,096 INFO L82 PathProgramCache]: Analyzing trace with hash 667874112, now seen corresponding path program 72 times [2020-10-16 10:47:39,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:39,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146101070] [2020-10-16 10:47:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:39,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:39,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146101070] [2020-10-16 10:47:39,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036597963] [2020-10-16 10:47:39,165 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:39,205 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:39,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:39,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:39,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:39,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:39,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:39,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:39,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158281122] [2020-10-16 10:47:39,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:39,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:39,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:39,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:39,346 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-16 10:47:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:39,602 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-16 10:47:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 10:47:39,603 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:39,604 INFO L225 Difference]: With dead ends: 187 [2020-10-16 10:47:39,604 INFO L226 Difference]: Without dead ends: 185 [2020-10-16 10:47:39,605 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 [2020-10-16 10:47:39,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-16 10:47:39,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-16 10:47:39,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-16 10:47:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-16 10:47:39,608 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-16 10:47:39,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:39,608 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-16 10:47:39,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:39,608 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-16 10:47:39,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:39,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:39,609 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:39,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:39,816 INFO L429 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:39,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:39,816 INFO L82 PathProgramCache]: Analyzing trace with hash 667895471, now seen corresponding path program 73 times [2020-10-16 10:47:39,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:39,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654067162] [2020-10-16 10:47:39,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:39,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:39,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654067162] [2020-10-16 10:47:39,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656094303] [2020-10-16 10:47:39,890 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:39,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:39,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:40,029 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:40,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:40,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:40,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508719490] [2020-10-16 10:47:40,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:40,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:40,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:40,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:40,059 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-16 10:47:40,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:40,496 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-16 10:47:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:47:40,496 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:40,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:40,498 INFO L225 Difference]: With dead ends: 212 [2020-10-16 10:47:40,498 INFO L226 Difference]: Without dead ends: 207 [2020-10-16 10:47:40,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=506, Unknown=0, NotChecked=0, Total=756 [2020-10-16 10:47:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-16 10:47:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-16 10:47:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-16 10:47:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-16 10:47:40,502 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-16 10:47:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:40,502 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-16 10:47:40,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:40,502 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-16 10:47:40,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:40,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:40,502 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:40,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-16 10:47:40,703 INFO L429 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:40,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:40,704 INFO L82 PathProgramCache]: Analyzing trace with hash 667896432, now seen corresponding path program 74 times [2020-10-16 10:47:40,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:40,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870093154] [2020-10-16 10:47:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:40,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870093154] [2020-10-16 10:47:40,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433372440] [2020-10-16 10:47:40,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:40,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:40,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:40,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:40,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:40,934 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:40,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:40,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:40,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054864638] [2020-10-16 10:47:40,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:40,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:40,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:40,955 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-16 10:47:41,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:41,284 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-16 10:47:41,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:47:41,285 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:41,287 INFO L225 Difference]: With dead ends: 202 [2020-10-16 10:47:41,287 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 10:47:41,288 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 [2020-10-16 10:47:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 10:47:41,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-16 10:47:41,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 10:47:41,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-16 10:47:41,291 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-16 10:47:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:41,292 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-16 10:47:41,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-16 10:47:41,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:41,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:41,292 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:41,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:41,493 INFO L429 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:41,494 INFO L82 PathProgramCache]: Analyzing trace with hash 668104752, now seen corresponding path program 75 times [2020-10-16 10:47:41,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:41,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869752900] [2020-10-16 10:47:41,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:41,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869752900] [2020-10-16 10:47:41,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011622332] [2020-10-16 10:47:41,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:41,604 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:41,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:41,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:41,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:41,782 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:41,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:41,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:41,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480664619] [2020-10-16 10:47:41,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:41,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:41,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:41,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:41,784 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-16 10:47:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:42,069 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-16 10:47:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:47:42,069 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:42,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:42,071 INFO L225 Difference]: With dead ends: 198 [2020-10-16 10:47:42,071 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 10:47:42,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=148, Invalid=358, Unknown=0, NotChecked=0, Total=506 [2020-10-16 10:47:42,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 10:47:42,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-16 10:47:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-16 10:47:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-16 10:47:42,075 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-16 10:47:42,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:42,075 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-16 10:47:42,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:42,075 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-16 10:47:42,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:42,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:42,076 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:42,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-16 10:47:42,286 INFO L429 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:42,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:42,286 INFO L82 PathProgramCache]: Analyzing trace with hash 668767842, now seen corresponding path program 76 times [2020-10-16 10:47:42,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:42,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120812813] [2020-10-16 10:47:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:42,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:42,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120812813] [2020-10-16 10:47:42,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046554191] [2020-10-16 10:47:42,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:42,398 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:42,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:42,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:42,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:42,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:42,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:42,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:42,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977020360] [2020-10-16 10:47:42,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:42,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:42,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:42,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:42,560 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-16 10:47:42,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:42,959 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-16 10:47:42,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 10:47:42,960 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:42,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:42,962 INFO L225 Difference]: With dead ends: 209 [2020-10-16 10:47:42,962 INFO L226 Difference]: Without dead ends: 207 [2020-10-16 10:47:42,962 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 [2020-10-16 10:47:42,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-16 10:47:42,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-16 10:47:42,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-16 10:47:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-16 10:47:42,966 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-16 10:47:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:42,966 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-16 10:47:42,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-16 10:47:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:42,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:42,966 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:43,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-16 10:47:43,167 INFO L429 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:43,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:43,168 INFO L82 PathProgramCache]: Analyzing trace with hash 668789201, now seen corresponding path program 77 times [2020-10-16 10:47:43,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:43,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642159317] [2020-10-16 10:47:43,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:43,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642159317] [2020-10-16 10:47:43,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702590372] [2020-10-16 10:47:43,240 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:43,292 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:47:43,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:43,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:43,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:43,415 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:43,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:43,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:43,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577138068] [2020-10-16 10:47:43,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:43,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:43,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:43,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:43,451 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-16 10:47:43,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:43,961 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-16 10:47:43,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 10:47:43,961 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:43,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:43,962 INFO L225 Difference]: With dead ends: 217 [2020-10-16 10:47:43,962 INFO L226 Difference]: Without dead ends: 212 [2020-10-16 10:47:43,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=289, Invalid=581, Unknown=0, NotChecked=0, Total=870 [2020-10-16 10:47:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-16 10:47:43,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-16 10:47:43,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 10:47:43,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-16 10:47:43,967 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-16 10:47:43,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:43,968 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-16 10:47:43,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:43,968 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-16 10:47:43,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:43,968 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:43,969 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:44,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-16 10:47:44,175 INFO L429 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:44,175 INFO L82 PathProgramCache]: Analyzing trace with hash 668790162, now seen corresponding path program 78 times [2020-10-16 10:47:44,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:44,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543607963] [2020-10-16 10:47:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:44,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:44,246 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:44,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543607963] [2020-10-16 10:47:44,247 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883075299] [2020-10-16 10:47:44,247 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:44,286 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:47:44,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:44,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:44,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:46,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:46,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:46,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:46,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:46,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758120483] [2020-10-16 10:47:46,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:46,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:46,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:46,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-16 10:47:46,499 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-16 10:47:50,807 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-16 10:47:55,042 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-16 10:47:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:55,529 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-16 10:47:55,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 10:47:55,530 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:55,531 INFO L225 Difference]: With dead ends: 236 [2020-10-16 10:47:55,531 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 10:47:55,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=293, Invalid=636, Unknown=1, NotChecked=0, Total=930 [2020-10-16 10:47:55,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 10:47:55,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-16 10:47:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 10:47:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-16 10:47:55,535 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-16 10:47:55,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:55,535 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-16 10:47:55,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:55,535 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-16 10:47:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:55,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:55,536 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:55,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-16 10:47:55,737 INFO L429 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:55,737 INFO L82 PathProgramCache]: Analyzing trace with hash 668818992, now seen corresponding path program 79 times [2020-10-16 10:47:55,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:55,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615031090] [2020-10-16 10:47:55,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:55,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:55,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615031090] [2020-10-16 10:47:55,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787071285] [2020-10-16 10:47:55,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:55,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:55,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:55,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:55,994 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:47:55,996 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:47:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:56,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:56,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:56,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749456524] [2020-10-16 10:47:56,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:56,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:56,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:56,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:56,028 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 15 states. [2020-10-16 10:47:56,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:56,593 INFO L93 Difference]: Finished difference Result 219 states and 522 transitions. [2020-10-16 10:47:56,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 10:47:56,593 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:56,594 INFO L225 Difference]: With dead ends: 219 [2020-10-16 10:47:56,594 INFO L226 Difference]: Without dead ends: 214 [2020-10-16 10:47:56,594 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 [2020-10-16 10:47:56,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-16 10:47:56,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 140. [2020-10-16 10:47:56,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 10:47:56,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-16 10:47:56,597 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-16 10:47:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:56,598 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-16 10:47:56,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:56,598 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-16 10:47:56,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:56,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:56,598 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:56,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:56,800 INFO L429 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:56,801 INFO L82 PathProgramCache]: Analyzing trace with hash 675254592, now seen corresponding path program 80 times [2020-10-16 10:47:56,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:56,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617549406] [2020-10-16 10:47:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:56,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:56,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617549406] [2020-10-16 10:47:56,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601643457] [2020-10-16 10:47:56,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:56,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:56,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:56,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:56,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:57,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:57,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:57,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:57,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434903532] [2020-10-16 10:47:57,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:57,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:57,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:57,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:57,067 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-16 10:47:57,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:57,333 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-16 10:47:57,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:57,333 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:57,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:57,334 INFO L225 Difference]: With dead ends: 197 [2020-10-16 10:47:57,334 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 10:47:57,335 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 [2020-10-16 10:47:57,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 10:47:57,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-16 10:47:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-16 10:47:57,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-16 10:47:57,339 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-16 10:47:57,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:57,339 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-16 10:47:57,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:57,339 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-16 10:47:57,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:57,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:57,340 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:57,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:47:57,542 INFO L429 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:57,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:57,542 INFO L82 PathProgramCache]: Analyzing trace with hash 675255553, now seen corresponding path program 81 times [2020-10-16 10:47:57,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:57,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676534352] [2020-10-16 10:47:57,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:57,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:57,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676534352] [2020-10-16 10:47:57,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127420951] [2020-10-16 10:47:57,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:57,653 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:47:57,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:57,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:57,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:57,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:57,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:57,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499317118] [2020-10-16 10:47:57,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:57,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:57,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:57,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:57,781 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-16 10:47:58,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:58,061 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-16 10:47:58,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:58,062 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:58,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:58,062 INFO L225 Difference]: With dead ends: 202 [2020-10-16 10:47:58,062 INFO L226 Difference]: Without dead ends: 200 [2020-10-16 10:47:58,063 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 [2020-10-16 10:47:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-16 10:47:58,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-16 10:47:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-16 10:47:58,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-16 10:47:58,066 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-16 10:47:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:58,067 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-16 10:47:58,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-16 10:47:58,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:58,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:58,067 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:58,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-16 10:47:58,268 INFO L429 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:58,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:58,269 INFO L82 PathProgramCache]: Analyzing trace with hash 675284383, now seen corresponding path program 82 times [2020-10-16 10:47:58,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:58,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934678214] [2020-10-16 10:47:58,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:58,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934678214] [2020-10-16 10:47:58,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445866404] [2020-10-16 10:47:58,345 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:58,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:47:58,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:58,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:58,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:58,528 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:58,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:58,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:58,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548884138] [2020-10-16 10:47:58,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:58,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:58,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:58,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:58,530 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-16 10:47:58,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:58,824 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-16 10:47:58,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:47:58,825 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:58,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:58,826 INFO L225 Difference]: With dead ends: 197 [2020-10-16 10:47:58,826 INFO L226 Difference]: Without dead ends: 195 [2020-10-16 10:47:58,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2020-10-16 10:47:58,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-16 10:47:58,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-16 10:47:58,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:47:58,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-16 10:47:58,829 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-16 10:47:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:58,829 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-16 10:47:58,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:58,829 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-16 10:47:58,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:58,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:58,830 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:59,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-16 10:47:59,031 INFO L429 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:59,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash 695810382, now seen corresponding path program 83 times [2020-10-16 10:47:59,032 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:59,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222981223] [2020-10-16 10:47:59,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:47:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:59,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222981223] [2020-10-16 10:47:59,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789131542] [2020-10-16 10:47:59,109 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:47:59,146 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:47:59,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:47:59,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:47:59,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:47:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:47:59,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:47:59,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:47:59,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136042181] [2020-10-16 10:47:59,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:47:59,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:47:59,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:47:59,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:47:59,287 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-16 10:47:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:47:59,715 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-16 10:47:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-16 10:47:59,716 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:47:59,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:47:59,717 INFO L225 Difference]: With dead ends: 214 [2020-10-16 10:47:59,717 INFO L226 Difference]: Without dead ends: 212 [2020-10-16 10:47:59,717 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 [2020-10-16 10:47:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-16 10:47:59,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-16 10:47:59,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 10:47:59,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-16 10:47:59,720 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-16 10:47:59,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:47:59,721 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-16 10:47:59,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:47:59,721 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-16 10:47:59,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:47:59,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:47:59,721 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:47:59,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-16 10:47:59,922 INFO L429 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:47:59,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:47:59,923 INFO L82 PathProgramCache]: Analyzing trace with hash 695811343, now seen corresponding path program 84 times [2020-10-16 10:47:59,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:47:59,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339816400] [2020-10-16 10:47:59,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:47:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:00,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339816400] [2020-10-16 10:48:00,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342041938] [2020-10-16 10:48:00,001 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:00,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:48:00,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:48:00,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:00,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:00,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:00,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:00,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124136661] [2020-10-16 10:48:00,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:00,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:00,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:00,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:00,168 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-16 10:48:00,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:00,578 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-16 10:48:00,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 10:48:00,579 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:00,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:00,580 INFO L225 Difference]: With dead ends: 217 [2020-10-16 10:48:00,580 INFO L226 Difference]: Without dead ends: 215 [2020-10-16 10:48:00,580 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 [2020-10-16 10:48:00,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-16 10:48:00,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-16 10:48:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-16 10:48:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-16 10:48:00,584 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-16 10:48:00,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:00,584 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-16 10:48:00,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:00,584 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-16 10:48:00,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:00,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:00,585 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:00,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:48:00,793 INFO L429 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:00,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:00,793 INFO L82 PathProgramCache]: Analyzing trace with hash 696473472, now seen corresponding path program 85 times [2020-10-16 10:48:00,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:00,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410821331] [2020-10-16 10:48:00,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:00,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:00,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410821331] [2020-10-16 10:48:00,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427303775] [2020-10-16 10:48:00,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:00,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:00,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:01,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:01,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:01,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84735995] [2020-10-16 10:48:01,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:01,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:01,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:01,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:01,042 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-16 10:48:01,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:01,467 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-16 10:48:01,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 10:48:01,468 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:01,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:01,469 INFO L225 Difference]: With dead ends: 211 [2020-10-16 10:48:01,469 INFO L226 Difference]: Without dead ends: 209 [2020-10-16 10:48:01,469 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 [2020-10-16 10:48:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-16 10:48:01,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-16 10:48:01,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-16 10:48:01,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-16 10:48:01,473 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-16 10:48:01,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:01,473 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-16 10:48:01,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-16 10:48:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:01,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:01,474 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:01,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:48:01,675 INFO L429 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:01,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:01,675 INFO L82 PathProgramCache]: Analyzing trace with hash 696494831, now seen corresponding path program 86 times [2020-10-16 10:48:01,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:01,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994900013] [2020-10-16 10:48:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:01,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994900013] [2020-10-16 10:48:01,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323330075] [2020-10-16 10:48:01,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:01,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:48:01,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:48:01,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:01,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:01,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:48:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:01,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:01,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:01,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561458113] [2020-10-16 10:48:01,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:01,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:01,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:01,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:01,929 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-16 10:48:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:02,423 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-16 10:48:02,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 10:48:02,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:02,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:02,425 INFO L225 Difference]: With dead ends: 211 [2020-10-16 10:48:02,425 INFO L226 Difference]: Without dead ends: 206 [2020-10-16 10:48:02,426 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 [2020-10-16 10:48:02,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-16 10:48:02,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-16 10:48:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-16 10:48:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-16 10:48:02,428 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-16 10:48:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:02,429 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-16 10:48:02,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-16 10:48:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:02,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:02,429 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:02,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-16 10:48:02,631 INFO L429 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:02,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:02,632 INFO L82 PathProgramCache]: Analyzing trace with hash 696495792, now seen corresponding path program 87 times [2020-10-16 10:48:02,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:02,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955605147] [2020-10-16 10:48:02,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:02,716 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:02,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955605147] [2020-10-16 10:48:02,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215901912] [2020-10-16 10:48:02,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:02,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:48:02,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:48:02,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:02,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:02,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:48:02,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:02,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:02,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:02,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134634059] [2020-10-16 10:48:02,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:02,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:02,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:02,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:02,905 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-16 10:48:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:03,518 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-16 10:48:03,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 10:48:03,518 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:03,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:03,519 INFO L225 Difference]: With dead ends: 227 [2020-10-16 10:48:03,519 INFO L226 Difference]: Without dead ends: 222 [2020-10-16 10:48:03,520 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 [2020-10-16 10:48:03,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-16 10:48:03,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-16 10:48:03,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-16 10:48:03,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-16 10:48:03,524 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-16 10:48:03,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:03,524 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-16 10:48:03,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:03,524 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-16 10:48:03,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:03,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:03,525 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:03,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-16 10:48:03,727 INFO L429 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:03,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:03,727 INFO L82 PathProgramCache]: Analyzing trace with hash 696503263, now seen corresponding path program 88 times [2020-10-16 10:48:03,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:03,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090091569] [2020-10-16 10:48:03,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:03,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090091569] [2020-10-16 10:48:03,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638106088] [2020-10-16 10:48:03,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:03,846 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:48:03,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:48:03,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:03,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:03,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:03,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:03,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:03,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413632399] [2020-10-16 10:48:03,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:03,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:03,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:03,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:03,975 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-16 10:48:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:04,463 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-16 10:48:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 10:48:04,464 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:04,465 INFO L225 Difference]: With dead ends: 221 [2020-10-16 10:48:04,465 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 10:48:04,466 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 [2020-10-16 10:48:04,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 10:48:04,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-16 10:48:04,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-16 10:48:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-16 10:48:04,469 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-16 10:48:04,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:04,469 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-16 10:48:04,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-16 10:48:04,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:04,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:04,470 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:04,670 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:48:04,671 INFO L429 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:04,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:04,671 INFO L82 PathProgramCache]: Analyzing trace with hash 696524622, now seen corresponding path program 89 times [2020-10-16 10:48:04,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:04,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219749083] [2020-10-16 10:48:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:04,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:04,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219749083] [2020-10-16 10:48:04,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868171237] [2020-10-16 10:48:04,748 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:04,787 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:48:04,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:48:04,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:04,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:04,937 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:48:04,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:04,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:04,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:04,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379786638] [2020-10-16 10:48:04,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:04,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:04,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:04,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:04,952 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-16 10:48:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:05,726 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-16 10:48:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 10:48:05,727 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:05,728 INFO L225 Difference]: With dead ends: 240 [2020-10-16 10:48:05,728 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 10:48:05,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 10:48:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 10:48:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-16 10:48:05,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-16 10:48:05,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-16 10:48:05,733 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-16 10:48:05,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:05,733 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-16 10:48:05,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:05,733 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-16 10:48:05,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:05,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:05,734 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:05,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-16 10:48:05,944 INFO L429 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:05,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:05,945 INFO L82 PathProgramCache]: Analyzing trace with hash 696525583, now seen corresponding path program 90 times [2020-10-16 10:48:05,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:05,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362759319] [2020-10-16 10:48:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:06,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362759319] [2020-10-16 10:48:06,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191309100] [2020-10-16 10:48:06,027 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:06,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:48:06,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:48:06,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:06,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:06,168 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:48:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:06,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:06,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:06,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62887182] [2020-10-16 10:48:06,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:06,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:06,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:06,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:06,183 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-16 10:48:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:06,816 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-16 10:48:06,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 10:48:06,817 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:06,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:06,817 INFO L225 Difference]: With dead ends: 238 [2020-10-16 10:48:06,817 INFO L226 Difference]: Without dead ends: 230 [2020-10-16 10:48:06,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 10:48:06,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-16 10:48:06,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-16 10:48:06,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:48:06,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-16 10:48:06,821 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-16 10:48:06,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:06,822 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-16 10:48:06,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-16 10:48:06,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:06,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:06,822 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:07,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:48:07,031 INFO L429 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:07,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:07,031 INFO L82 PathProgramCache]: Analyzing trace with hash 696733903, now seen corresponding path program 91 times [2020-10-16 10:48:07,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:07,032 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340463858] [2020-10-16 10:48:07,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:07,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340463858] [2020-10-16 10:48:07,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950053936] [2020-10-16 10:48:07,113 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:07,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:07,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:07,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:07,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:07,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298583988] [2020-10-16 10:48:07,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:07,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:07,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:07,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:07,303 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-16 10:48:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:07,574 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-16 10:48:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:48:07,575 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:07,575 INFO L225 Difference]: With dead ends: 195 [2020-10-16 10:48:07,575 INFO L226 Difference]: Without dead ends: 193 [2020-10-16 10:48:07,576 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=357, Unknown=0, NotChecked=0, Total=506 [2020-10-16 10:48:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-16 10:48:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-16 10:48:07,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:48:07,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-16 10:48:07,579 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-16 10:48:07,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:07,579 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-16 10:48:07,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:07,579 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-16 10:48:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:07,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:07,580 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:07,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-16 10:48:07,781 INFO L429 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:07,781 INFO L82 PathProgramCache]: Analyzing trace with hash 697396993, now seen corresponding path program 92 times [2020-10-16 10:48:07,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:07,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042302363] [2020-10-16 10:48:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:07,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042302363] [2020-10-16 10:48:07,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690756584] [2020-10-16 10:48:07,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:07,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:48:07,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:48:07,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:07,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:08,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:08,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:48:08,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691342554] [2020-10-16 10:48:08,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:48:08,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:08,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:48:08,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:48:08,053 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-16 10:48:08,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:48:08,551 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-16 10:48:08,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 10:48:08,551 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:48:08,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:48:08,552 INFO L225 Difference]: With dead ends: 206 [2020-10-16 10:48:08,552 INFO L226 Difference]: Without dead ends: 204 [2020-10-16 10:48:08,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-10-16 10:48:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-16 10:48:08,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-16 10:48:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-16 10:48:08,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-16 10:48:08,556 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-16 10:48:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:48:08,556 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-16 10:48:08,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:48:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-16 10:48:08,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:48:08,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:48:08,557 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:48:08,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:48:08,757 INFO L429 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:48:08,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:48:08,758 INFO L82 PathProgramCache]: Analyzing trace with hash 697419313, now seen corresponding path program 93 times [2020-10-16 10:48:08,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:48:08,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336013547] [2020-10-16 10:48:08,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:48:08,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:48:08,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:08,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336013547] [2020-10-16 10:48:08,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901199583] [2020-10-16 10:48:08,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:48:08,880 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:48:08,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:48:08,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:48:08,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:48:09,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:48:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:48:10,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:48:10,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 10:48:10,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173528847] [2020-10-16 10:48:10,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 10:48:10,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:48:10,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 10:48:10,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-16 10:48:10,222 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-16 10:48:12,649 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-16 10:48:33,390 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-16 10:49:02,983 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-16 10:49:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:25,527 INFO L93 Difference]: Finished difference Result 252 states and 593 transitions. [2020-10-16 10:49:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-16 10:49:25,528 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-16 10:49:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:25,529 INFO L225 Difference]: With dead ends: 252 [2020-10-16 10:49:25,529 INFO L226 Difference]: Without dead ends: 247 [2020-10-16 10:49:25,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332 [2020-10-16 10:49:25,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-16 10:49:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 139. [2020-10-16 10:49:25,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 10:49:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-16 10:49:25,534 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-16 10:49:25,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:25,534 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-16 10:49:25,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 10:49:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-16 10:49:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:25,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:25,535 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:25,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-16 10:49:25,736 INFO L429 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:25,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:25,737 INFO L82 PathProgramCache]: Analyzing trace with hash 896899632, now seen corresponding path program 94 times [2020-10-16 10:49:25,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:25,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366126357] [2020-10-16 10:49:25,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:25,828 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:25,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366126357] [2020-10-16 10:49:25,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257384875] [2020-10-16 10:49:25,829 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:25,872 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:49:25,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:25,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:25,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:26,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:26,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:26,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283592231] [2020-10-16 10:49:26,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:26,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:26,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:26,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:26,003 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-16 10:49:26,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:26,229 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-16 10:49:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:49:26,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:26,235 INFO L225 Difference]: With dead ends: 194 [2020-10-16 10:49:26,235 INFO L226 Difference]: Without dead ends: 192 [2020-10-16 10:49:26,235 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 [2020-10-16 10:49:26,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-16 10:49:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-16 10:49:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 10:49:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-16 10:49:26,238 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-16 10:49:26,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:26,238 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-16 10:49:26,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-16 10:49:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:26,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:26,238 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:26,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:26,439 INFO L429 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:26,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:26,440 INFO L82 PathProgramCache]: Analyzing trace with hash 896900593, now seen corresponding path program 95 times [2020-10-16 10:49:26,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:26,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452106357] [2020-10-16 10:49:26,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:26,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452106357] [2020-10-16 10:49:26,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917862551] [2020-10-16 10:49:26,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:26,572 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:49:26,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:26,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:26,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:26,712 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:26,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:26,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:26,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044356012] [2020-10-16 10:49:26,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:26,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:26,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:26,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:26,714 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-16 10:49:27,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:27,042 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-16 10:49:27,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:49:27,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:27,044 INFO L225 Difference]: With dead ends: 205 [2020-10-16 10:49:27,044 INFO L226 Difference]: Without dead ends: 203 [2020-10-16 10:49:27,044 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 [2020-10-16 10:49:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-16 10:49:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-16 10:49:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:49:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-16 10:49:27,048 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-16 10:49:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:27,048 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-16 10:49:27,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:27,049 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-16 10:49:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:27,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:27,049 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:27,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:27,250 INFO L429 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:27,251 INFO L82 PathProgramCache]: Analyzing trace with hash 896929423, now seen corresponding path program 96 times [2020-10-16 10:49:27,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:27,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806702929] [2020-10-16 10:49:27,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:27,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806702929] [2020-10-16 10:49:27,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293195848] [2020-10-16 10:49:27,343 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:27,392 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:49:27,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:27,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:27,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:27,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:27,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:27,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641679867] [2020-10-16 10:49:27,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:27,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:27,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:27,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:27,531 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-16 10:49:27,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:27,819 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-16 10:49:27,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:49:27,820 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:27,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:27,820 INFO L225 Difference]: With dead ends: 201 [2020-10-16 10:49:27,821 INFO L226 Difference]: Without dead ends: 199 [2020-10-16 10:49:27,821 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 [2020-10-16 10:49:27,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-16 10:49:27,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-16 10:49:27,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 10:49:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-16 10:49:27,824 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-16 10:49:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:27,824 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-16 10:49:27,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:27,824 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-16 10:49:27,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:27,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:27,825 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:28,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:28,026 INFO L429 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:28,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:28,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1534129122, now seen corresponding path program 97 times [2020-10-16 10:49:28,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:28,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340732603] [2020-10-16 10:49:28,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:28,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340732603] [2020-10-16 10:49:28,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293126287] [2020-10-16 10:49:28,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:28,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:28,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:28,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:28,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:28,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285909228] [2020-10-16 10:49:28,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:28,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:28,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:28,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:28,299 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-16 10:49:28,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:28,549 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-16 10:49:28,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:49:28,555 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:28,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:28,555 INFO L225 Difference]: With dead ends: 194 [2020-10-16 10:49:28,556 INFO L226 Difference]: Without dead ends: 192 [2020-10-16 10:49:28,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=330, Unknown=0, NotChecked=0, Total=462 [2020-10-16 10:49:28,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-16 10:49:28,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-16 10:49:28,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 10:49:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-16 10:49:28,559 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-16 10:49:28,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:28,559 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-16 10:49:28,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-16 10:49:28,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:28,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:28,560 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:28,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-16 10:49:28,771 INFO L429 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:28,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:28,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1534130083, now seen corresponding path program 98 times [2020-10-16 10:49:28,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:28,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956573548] [2020-10-16 10:49:28,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:28,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956573548] [2020-10-16 10:49:28,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856116998] [2020-10-16 10:49:28,855 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:28,892 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:49:28,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:28,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:28,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:29,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:29,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:29,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028256921] [2020-10-16 10:49:29,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:29,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:29,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:29,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:29,047 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-16 10:49:29,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:29,417 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-16 10:49:29,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 10:49:29,418 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:29,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:29,418 INFO L225 Difference]: With dead ends: 209 [2020-10-16 10:49:29,419 INFO L226 Difference]: Without dead ends: 207 [2020-10-16 10:49:29,419 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 [2020-10-16 10:49:29,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-16 10:49:29,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-16 10:49:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 10:49:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-16 10:49:29,422 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-16 10:49:29,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:29,423 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-16 10:49:29,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:29,423 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-16 10:49:29,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:29,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:29,423 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:29,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:29,624 INFO L429 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:29,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:29,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1534158913, now seen corresponding path program 99 times [2020-10-16 10:49:29,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:29,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587375411] [2020-10-16 10:49:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:29,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:29,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587375411] [2020-10-16 10:49:29,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749378720] [2020-10-16 10:49:29,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:29,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:49:29,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:29,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:29,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:29,943 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:29,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:29,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:29,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276526584] [2020-10-16 10:49:29,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:29,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:29,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:29,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:29,945 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-16 10:49:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:30,283 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-16 10:49:30,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 10:49:30,284 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:30,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:30,285 INFO L225 Difference]: With dead ends: 202 [2020-10-16 10:49:30,285 INFO L226 Difference]: Without dead ends: 200 [2020-10-16 10:49:30,285 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 [2020-10-16 10:49:30,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-16 10:49:30,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-16 10:49:30,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 10:49:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-16 10:49:30,288 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-16 10:49:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:30,288 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-16 10:49:30,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-16 10:49:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:30,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:30,289 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:30,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-16 10:49:30,490 INFO L429 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:30,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1554684912, now seen corresponding path program 100 times [2020-10-16 10:49:30,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:30,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452980657] [2020-10-16 10:49:30,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:30,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:30,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452980657] [2020-10-16 10:49:30,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939675898] [2020-10-16 10:49:30,572 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:30,611 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:49:30,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:30,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:30,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:30,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:30,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:30,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:30,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250375443] [2020-10-16 10:49:30,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:30,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:30,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:30,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:30,759 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-16 10:49:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:31,102 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-16 10:49:31,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:49:31,102 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:31,103 INFO L225 Difference]: With dead ends: 201 [2020-10-16 10:49:31,103 INFO L226 Difference]: Without dead ends: 199 [2020-10-16 10:49:31,104 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 [2020-10-16 10:49:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-16 10:49:31,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-16 10:49:31,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-16 10:49:31,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-16 10:49:31,107 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-16 10:49:31,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:31,107 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-16 10:49:31,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-16 10:49:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:31,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:31,108 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:31,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-16 10:49:31,309 INFO L429 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:31,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:31,309 INFO L82 PathProgramCache]: Analyzing trace with hash 1554685873, now seen corresponding path program 101 times [2020-10-16 10:49:31,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:31,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738303255] [2020-10-16 10:49:31,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:31,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738303255] [2020-10-16 10:49:31,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969222931] [2020-10-16 10:49:31,400 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:31,460 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:49:31,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:31,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:31,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:31,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:31,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:31,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485965659] [2020-10-16 10:49:31,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:31,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:31,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:31,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:31,638 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-16 10:49:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:32,133 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-16 10:49:32,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-16 10:49:32,134 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:32,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:32,135 INFO L225 Difference]: With dead ends: 215 [2020-10-16 10:49:32,135 INFO L226 Difference]: Without dead ends: 213 [2020-10-16 10:49:32,136 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 [2020-10-16 10:49:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-16 10:49:32,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-16 10:49:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:49:32,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-16 10:49:32,140 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-16 10:49:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:32,140 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-16 10:49:32,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:32,141 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-16 10:49:32,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:32,142 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:32,142 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:32,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:32,355 INFO L429 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:32,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:32,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1555348002, now seen corresponding path program 102 times [2020-10-16 10:49:32,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:32,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42859179] [2020-10-16 10:49:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:32,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42859179] [2020-10-16 10:49:32,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983085584] [2020-10-16 10:49:32,441 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:32,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:49:32,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:32,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:32,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:32,616 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:32,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:32,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:32,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678217769] [2020-10-16 10:49:32,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:32,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:32,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:32,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:32,619 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-16 10:49:33,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:33,028 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-16 10:49:33,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:49:33,029 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:33,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:33,030 INFO L225 Difference]: With dead ends: 196 [2020-10-16 10:49:33,030 INFO L226 Difference]: Without dead ends: 194 [2020-10-16 10:49:33,030 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 [2020-10-16 10:49:33,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-16 10:49:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-16 10:49:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 10:49:33,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-16 10:49:33,035 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-16 10:49:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:33,035 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-16 10:49:33,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-16 10:49:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:33,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:33,036 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:33,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:33,238 INFO L429 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1555369361, now seen corresponding path program 103 times [2020-10-16 10:49:33,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:33,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592223912] [2020-10-16 10:49:33,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:33,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592223912] [2020-10-16 10:49:33,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544505162] [2020-10-16 10:49:33,324 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:33,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:33,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:33,472 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:49:33,483 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:33,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:33,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:33,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360510175] [2020-10-16 10:49:33,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:33,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:33,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:33,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:33,488 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-16 10:49:33,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:33,936 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-16 10:49:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:49:33,937 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:33,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:33,938 INFO L225 Difference]: With dead ends: 191 [2020-10-16 10:49:33,938 INFO L226 Difference]: Without dead ends: 186 [2020-10-16 10:49:33,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-16 10:49:33,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-16 10:49:33,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-16 10:49:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 10:49:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-16 10:49:33,944 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-16 10:49:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:33,944 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-16 10:49:33,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-16 10:49:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:33,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:33,945 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:34,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-16 10:49:34,154 INFO L429 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:34,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:34,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1555370322, now seen corresponding path program 104 times [2020-10-16 10:49:34,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:34,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231797303] [2020-10-16 10:49:34,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:34,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231797303] [2020-10-16 10:49:34,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476343957] [2020-10-16 10:49:34,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:34,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:49:34,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:34,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:34,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:34,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:49:34,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:34,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:34,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:34,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309376823] [2020-10-16 10:49:34,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:34,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:34,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:34,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:34,537 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-16 10:49:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:35,154 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-16 10:49:35,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 10:49:35,155 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:35,157 INFO L225 Difference]: With dead ends: 232 [2020-10-16 10:49:35,157 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 10:49:35,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-16 10:49:35,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 10:49:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-16 10:49:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-16 10:49:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-16 10:49:35,161 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-16 10:49:35,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:35,161 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-16 10:49:35,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:35,162 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-16 10:49:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:35,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:35,162 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:35,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:35,363 INFO L429 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:35,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:35,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1555377793, now seen corresponding path program 105 times [2020-10-16 10:49:35,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:35,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514521384] [2020-10-16 10:49:35,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:35,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514521384] [2020-10-16 10:49:35,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647839630] [2020-10-16 10:49:35,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:35,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:49:35,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:35,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:35,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:35,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:35,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:35,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841462126] [2020-10-16 10:49:35,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:35,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:35,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:35,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:35,660 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-16 10:49:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:36,312 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-16 10:49:36,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 10:49:36,313 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:36,314 INFO L225 Difference]: With dead ends: 222 [2020-10-16 10:49:36,314 INFO L226 Difference]: Without dead ends: 220 [2020-10-16 10:49:36,314 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 [2020-10-16 10:49:36,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-16 10:49:36,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-16 10:49:36,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-16 10:49:36,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-16 10:49:36,318 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-16 10:49:36,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:36,319 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-16 10:49:36,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:36,319 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-16 10:49:36,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:36,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:36,320 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:36,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:36,531 INFO L429 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:36,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:36,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1555399152, now seen corresponding path program 106 times [2020-10-16 10:49:36,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:36,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842258476] [2020-10-16 10:49:36,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:36,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:36,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:36,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842258476] [2020-10-16 10:49:36,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061408024] [2020-10-16 10:49:36,622 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:36,669 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:49:36,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:36,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:36,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:36,798 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:49:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:36,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:36,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:36,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210236722] [2020-10-16 10:49:36,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:36,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:36,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:36,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:36,839 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-16 10:49:37,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:37,693 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-16 10:49:37,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 10:49:37,704 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:37,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:37,705 INFO L225 Difference]: With dead ends: 254 [2020-10-16 10:49:37,705 INFO L226 Difference]: Without dead ends: 246 [2020-10-16 10:49:37,705 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 [2020-10-16 10:49:37,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-16 10:49:37,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-16 10:49:37,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 10:49:37,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-16 10:49:37,708 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-16 10:49:37,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:37,708 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-16 10:49:37,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-16 10:49:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:37,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:37,709 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:37,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:37,909 INFO L429 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:37,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1555400113, now seen corresponding path program 107 times [2020-10-16 10:49:37,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:37,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120469969] [2020-10-16 10:49:37,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:37,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120469969] [2020-10-16 10:49:38,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532843612] [2020-10-16 10:49:38,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:38,039 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:49:38,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:38,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:38,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:38,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:49:38,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:38,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:38,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:38,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324331561] [2020-10-16 10:49:38,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:38,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:38,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:38,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:38,205 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-16 10:49:39,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:39,047 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-16 10:49:39,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 10:49:39,048 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:39,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:39,049 INFO L225 Difference]: With dead ends: 246 [2020-10-16 10:49:39,049 INFO L226 Difference]: Without dead ends: 238 [2020-10-16 10:49:39,050 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 [2020-10-16 10:49:39,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-16 10:49:39,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-16 10:49:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 10:49:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-16 10:49:39,054 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-16 10:49:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:39,055 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-16 10:49:39,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:39,055 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-16 10:49:39,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:39,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:39,056 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:39,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-16 10:49:39,267 INFO L429 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:39,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1555608433, now seen corresponding path program 108 times [2020-10-16 10:49:39,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:39,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285278128] [2020-10-16 10:49:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:39,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285278128] [2020-10-16 10:49:39,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579925673] [2020-10-16 10:49:39,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:39,400 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:49:39,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:39,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:39,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:39,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:39,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:39,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833105248] [2020-10-16 10:49:39,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:39,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:39,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:39,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:39,560 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-16 10:49:39,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:39,981 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-16 10:49:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 10:49:39,982 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:39,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:39,983 INFO L225 Difference]: With dead ends: 208 [2020-10-16 10:49:39,983 INFO L226 Difference]: Without dead ends: 206 [2020-10-16 10:49:39,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=205, Invalid=497, Unknown=0, NotChecked=0, Total=702 [2020-10-16 10:49:39,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-16 10:49:39,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-16 10:49:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-16 10:49:39,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-16 10:49:39,986 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-16 10:49:39,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:39,986 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-16 10:49:39,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:39,986 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-16 10:49:39,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:39,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:39,987 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:40,187 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-16 10:49:40,188 INFO L429 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:40,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:40,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1556271523, now seen corresponding path program 109 times [2020-10-16 10:49:40,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:40,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094259178] [2020-10-16 10:49:40,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:40,284 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:40,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094259178] [2020-10-16 10:49:40,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462829630] [2020-10-16 10:49:40,285 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:40,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:40,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:40,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:40,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:40,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946675514] [2020-10-16 10:49:40,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:40,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:40,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:40,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:40,461 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-16 10:49:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:41,066 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-16 10:49:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 10:49:41,067 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:41,068 INFO L225 Difference]: With dead ends: 215 [2020-10-16 10:49:41,068 INFO L226 Difference]: Without dead ends: 213 [2020-10-16 10:49:41,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=265, Invalid=605, Unknown=0, NotChecked=0, Total=870 [2020-10-16 10:49:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-16 10:49:41,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-16 10:49:41,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 10:49:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-16 10:49:41,072 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-16 10:49:41,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:41,072 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-16 10:49:41,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:41,072 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-16 10:49:41,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:41,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:41,073 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:41,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-16 10:49:41,274 INFO L429 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:41,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:41,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1556292882, now seen corresponding path program 110 times [2020-10-16 10:49:41,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:41,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19750870] [2020-10-16 10:49:41,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:41,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:41,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19750870] [2020-10-16 10:49:41,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080163058] [2020-10-16 10:49:41,364 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:41,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:49:41,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:41,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:41,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:41,518 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:49:41,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:41,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:41,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:41,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301521196] [2020-10-16 10:49:41,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:41,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:41,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:41,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:41,532 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-16 10:49:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:42,196 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-16 10:49:42,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 10:49:42,197 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:42,198 INFO L225 Difference]: With dead ends: 236 [2020-10-16 10:49:42,198 INFO L226 Difference]: Without dead ends: 228 [2020-10-16 10:49:42,198 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 [2020-10-16 10:49:42,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-16 10:49:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-16 10:49:42,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-16 10:49:42,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-16 10:49:42,201 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-16 10:49:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:42,201 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-16 10:49:42,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:42,202 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-16 10:49:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:42,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:42,202 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:42,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-16 10:49:42,403 INFO L429 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:42,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:42,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1556293843, now seen corresponding path program 111 times [2020-10-16 10:49:42,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:42,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611388291] [2020-10-16 10:49:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:42,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611388291] [2020-10-16 10:49:42,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232565781] [2020-10-16 10:49:42,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:42,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:49:42,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:42,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:42,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:42,649 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:49:42,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:42,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:42,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:42,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088020690] [2020-10-16 10:49:42,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:42,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:42,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:42,660 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-16 10:49:43,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:43,351 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-16 10:49:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-16 10:49:43,352 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:43,353 INFO L225 Difference]: With dead ends: 241 [2020-10-16 10:49:43,353 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 10:49:43,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 10:49:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 10:49:43,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-16 10:49:43,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-16 10:49:43,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-16 10:49:43,356 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-16 10:49:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:43,356 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-16 10:49:43,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:43,357 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-16 10:49:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:43,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:43,357 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:43,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-16 10:49:43,565 INFO L429 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:43,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:43,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1556322673, now seen corresponding path program 112 times [2020-10-16 10:49:43,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:43,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933814312] [2020-10-16 10:49:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:43,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:43,659 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:43,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933814312] [2020-10-16 10:49:43,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883199989] [2020-10-16 10:49:43,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:43,700 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:49:43,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:43,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-16 10:49:43,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:43,826 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:49:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:43,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:43,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-16 10:49:43,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388298885] [2020-10-16 10:49:43,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-16 10:49:43,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:43,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-16 10:49:43,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-16 10:49:43,841 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-16 10:49:44,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:44,495 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-16 10:49:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 10:49:44,496 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-16 10:49:44,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:44,497 INFO L225 Difference]: With dead ends: 232 [2020-10-16 10:49:44,497 INFO L226 Difference]: Without dead ends: 224 [2020-10-16 10:49:44,498 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-16 10:49:44,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-16 10:49:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-16 10:49:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-16 10:49:44,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-16 10:49:44,501 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-16 10:49:44,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:44,502 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-16 10:49:44,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-16 10:49:44,502 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-16 10:49:44,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:44,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:44,502 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:44,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:44,703 INFO L429 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:44,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1725446472, now seen corresponding path program 6 times [2020-10-16 10:49:44,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:44,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432084488] [2020-10-16 10:49:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:44,822 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:44,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432084488] [2020-10-16 10:49:44,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775001594] [2020-10-16 10:49:44,823 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:44,862 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 10:49:44,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:44,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:44,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:45,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:49:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:45,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:45,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-16 10:49:45,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142957999] [2020-10-16 10:49:45,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-16 10:49:45,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:45,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-16 10:49:45,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-16 10:49:45,111 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states. [2020-10-16 10:49:45,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:45,453 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-16 10:49:45,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:49:45,455 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-10-16 10:49:45,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:45,456 INFO L225 Difference]: With dead ends: 185 [2020-10-16 10:49:45,456 INFO L226 Difference]: Without dead ends: 180 [2020-10-16 10:49:45,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-16 10:49:45,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-16 10:49:45,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-16 10:49:45,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-16 10:49:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-16 10:49:45,461 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-16 10:49:45,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:45,462 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-16 10:49:45,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-16 10:49:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-16 10:49:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:45,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:45,463 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:45,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-16 10:49:45,664 INFO L429 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:45,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:45,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1934382410, now seen corresponding path program 21 times [2020-10-16 10:49:45,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:45,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808577472] [2020-10-16 10:49:45,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:45,861 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:45,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808577472] [2020-10-16 10:49:45,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702857274] [2020-10-16 10:49:45,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:45,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 10:49:45,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:45,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:45,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:46,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:46,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:46,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569962189] [2020-10-16 10:49:46,129 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:46,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:46,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:46,130 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 17 states. [2020-10-16 10:49:46,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:46,195 INFO L93 Difference]: Finished difference Result 180 states and 423 transitions. [2020-10-16 10:49:46,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:49:46,196 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-16 10:49:46,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:46,196 INFO L225 Difference]: With dead ends: 180 [2020-10-16 10:49:46,197 INFO L226 Difference]: Without dead ends: 177 [2020-10-16 10:49:46,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:46,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-16 10:49:46,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2020-10-16 10:49:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-16 10:49:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-16 10:49:46,200 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-16 10:49:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:46,200 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-16 10:49:46,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-16 10:49:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:46,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:46,201 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:46,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-16 10:49:46,401 INFO L429 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:46,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:46,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1413108102, now seen corresponding path program 22 times [2020-10-16 10:49:46,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:46,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278077121] [2020-10-16 10:49:46,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:46,570 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:46,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278077121] [2020-10-16 10:49:46,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80126424] [2020-10-16 10:49:46,571 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:46,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:49:46,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:46,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:46,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:46,797 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:46,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:46,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:46,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381517779] [2020-10-16 10:49:46,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:46,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:46,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:46,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:46,799 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-16 10:49:46,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:46,901 INFO L93 Difference]: Finished difference Result 197 states and 456 transitions. [2020-10-16 10:49:46,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:49:46,901 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-16 10:49:46,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:46,902 INFO L225 Difference]: With dead ends: 197 [2020-10-16 10:49:46,902 INFO L226 Difference]: Without dead ends: 194 [2020-10-16 10:49:46,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-16 10:49:46,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-16 10:49:46,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 148. [2020-10-16 10:49:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-16 10:49:46,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-16 10:49:46,906 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-16 10:49:46,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:46,906 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-16 10:49:46,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:46,906 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-16 10:49:46,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:46,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:46,907 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:47,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:47,108 INFO L429 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash 551260342, now seen corresponding path program 23 times [2020-10-16 10:49:47,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:47,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990984543] [2020-10-16 10:49:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:47,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:47,265 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:47,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990984543] [2020-10-16 10:49:47,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315407551] [2020-10-16 10:49:47,266 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:47,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-16 10:49:47,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:47,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:47,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:47,534 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:47,534 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:47,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468344651] [2020-10-16 10:49:47,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:47,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:47,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:47,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:47,536 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-16 10:49:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:47,699 INFO L93 Difference]: Finished difference Result 196 states and 456 transitions. [2020-10-16 10:49:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:49:47,701 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-16 10:49:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:47,702 INFO L225 Difference]: With dead ends: 196 [2020-10-16 10:49:47,702 INFO L226 Difference]: Without dead ends: 193 [2020-10-16 10:49:47,702 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-16 10:49:47,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-16 10:49:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2020-10-16 10:49:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-16 10:49:47,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 367 transitions. [2020-10-16 10:49:47,708 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 367 transitions. Word has length 13 [2020-10-16 10:49:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:47,708 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 367 transitions. [2020-10-16 10:49:47,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:47,708 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 367 transitions. [2020-10-16 10:49:47,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:47,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:47,709 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:47,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:47,921 INFO L429 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:47,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:47,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1216195462, now seen corresponding path program 24 times [2020-10-16 10:49:47,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:47,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581405211] [2020-10-16 10:49:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:48,100 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:48,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581405211] [2020-10-16 10:49:48,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144769500] [2020-10-16 10:49:48,101 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:48,147 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-16 10:49:48,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:48,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:48,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:48,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:48,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:48,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528680805] [2020-10-16 10:49:48,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:48,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:48,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:48,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:48,363 INFO L87 Difference]: Start difference. First operand 149 states and 367 transitions. Second operand 17 states. [2020-10-16 10:49:48,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:48,510 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-16 10:49:48,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:49:48,511 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-16 10:49:48,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:48,512 INFO L225 Difference]: With dead ends: 195 [2020-10-16 10:49:48,512 INFO L226 Difference]: Without dead ends: 192 [2020-10-16 10:49:48,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-16 10:49:48,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-16 10:49:48,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 150. [2020-10-16 10:49:48,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-16 10:49:48,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 372 transitions. [2020-10-16 10:49:48,515 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 372 transitions. Word has length 13 [2020-10-16 10:49:48,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:48,516 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 372 transitions. [2020-10-16 10:49:48,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:48,516 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 372 transitions. [2020-10-16 10:49:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:48,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:48,516 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:48,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:48,717 INFO L429 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:48,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:48,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1237644982, now seen corresponding path program 25 times [2020-10-16 10:49:48,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:48,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529670978] [2020-10-16 10:49:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:48,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:48,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529670978] [2020-10-16 10:49:48,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195875369] [2020-10-16 10:49:48,846 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:48,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:48,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:49,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:49,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:49,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11570152] [2020-10-16 10:49:49,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:49,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:49,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:49,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:49,076 INFO L87 Difference]: Start difference. First operand 150 states and 372 transitions. Second operand 17 states. [2020-10-16 10:49:49,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:49,273 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-10-16 10:49:49,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 10:49:49,273 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-16 10:49:49,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:49,274 INFO L225 Difference]: With dead ends: 194 [2020-10-16 10:49:49,274 INFO L226 Difference]: Without dead ends: 191 [2020-10-16 10:49:49,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-16 10:49:49,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-16 10:49:49,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 152. [2020-10-16 10:49:49,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-16 10:49:49,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 379 transitions. [2020-10-16 10:49:49,279 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 379 transitions. Word has length 13 [2020-10-16 10:49:49,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:49,279 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 379 transitions. [2020-10-16 10:49:49,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:49,280 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 379 transitions. [2020-10-16 10:49:49,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:49,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:49,280 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:49,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:49:49,491 INFO L429 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:49,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:49,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1238336902, now seen corresponding path program 26 times [2020-10-16 10:49:49,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:49,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188254178] [2020-10-16 10:49:49,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:49,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:49,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188254178] [2020-10-16 10:49:49,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531088543] [2020-10-16 10:49:49,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:49,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:49:49,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:49,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:49,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:49,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:49,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:49,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335644837] [2020-10-16 10:49:49,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:49,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:49,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:49,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:49,861 INFO L87 Difference]: Start difference. First operand 152 states and 379 transitions. Second operand 17 states. [2020-10-16 10:49:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:50,087 INFO L93 Difference]: Finished difference Result 193 states and 456 transitions. [2020-10-16 10:49:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:49:50,088 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-16 10:49:50,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:50,088 INFO L225 Difference]: With dead ends: 193 [2020-10-16 10:49:50,089 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 10:49:50,089 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-16 10:49:50,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 10:49:50,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-10-16 10:49:50,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 10:49:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 386 transitions. [2020-10-16 10:49:50,092 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 386 transitions. Word has length 13 [2020-10-16 10:49:50,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:50,092 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 386 transitions. [2020-10-16 10:49:50,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 386 transitions. [2020-10-16 10:49:50,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 10:49:50,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:50,093 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:50,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-16 10:49:50,294 INFO L429 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:50,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:50,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1238359222, now seen corresponding path program 27 times [2020-10-16 10:49:50,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:50,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909754824] [2020-10-16 10:49:50,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:50,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:50,404 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:50,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909754824] [2020-10-16 10:49:50,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402566772] [2020-10-16 10:49:50,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:50,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 10:49:50,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:50,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:50,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:50,608 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:49:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:50,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:50,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:50,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93997338] [2020-10-16 10:49:50,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:50,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:50,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:50,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:50,628 INFO L87 Difference]: Start difference. First operand 154 states and 386 transitions. Second operand 17 states. [2020-10-16 10:49:50,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:50,919 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-16 10:49:50,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:49:50,920 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-16 10:49:50,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:50,921 INFO L225 Difference]: With dead ends: 202 [2020-10-16 10:49:50,921 INFO L226 Difference]: Without dead ends: 196 [2020-10-16 10:49:50,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-10-16 10:49:50,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-16 10:49:50,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2020-10-16 10:49:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-16 10:49:50,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions. [2020-10-16 10:49:50,926 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 13 [2020-10-16 10:49:50,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:50,926 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 382 transitions. [2020-10-16 10:49:50,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:50,926 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions. [2020-10-16 10:49:50,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:49:50,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:50,927 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:51,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-16 10:49:51,138 INFO L429 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:51,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:51,139 INFO L82 PathProgramCache]: Analyzing trace with hash 2094057644, now seen corresponding path program 113 times [2020-10-16 10:49:51,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:51,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116424577] [2020-10-16 10:49:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:51,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:51,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116424577] [2020-10-16 10:49:51,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640875959] [2020-10-16 10:49:51,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:51,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:49:51,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:51,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:51,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:51,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:51,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:51,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155336976] [2020-10-16 10:49:51,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:51,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:51,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:51,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:51,517 INFO L87 Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 17 states. [2020-10-16 10:49:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:51,590 INFO L93 Difference]: Finished difference Result 188 states and 456 transitions. [2020-10-16 10:49:51,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-16 10:49:51,590 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:49:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:51,591 INFO L225 Difference]: With dead ends: 188 [2020-10-16 10:49:51,591 INFO L226 Difference]: Without dead ends: 186 [2020-10-16 10:49:51,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:51,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-16 10:49:51,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2020-10-16 10:49:51,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-16 10:49:51,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 406 transitions. [2020-10-16 10:49:51,596 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 406 transitions. Word has length 14 [2020-10-16 10:49:51,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:51,596 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 406 transitions. [2020-10-16 10:49:51,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:51,596 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 406 transitions. [2020-10-16 10:49:51,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:49:51,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:51,597 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:51,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-16 10:49:51,807 INFO L429 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:51,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:51,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2094058605, now seen corresponding path program 114 times [2020-10-16 10:49:51,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:51,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119799168] [2020-10-16 10:49:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:51,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119799168] [2020-10-16 10:49:51,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290999604] [2020-10-16 10:49:51,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:51,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:49:51,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:51,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:51,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:52,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:52,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:52,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:52,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103217391] [2020-10-16 10:49:52,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:52,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:52,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:52,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:52,174 INFO L87 Difference]: Start difference. First operand 159 states and 406 transitions. Second operand 17 states. [2020-10-16 10:49:52,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:52,430 INFO L93 Difference]: Finished difference Result 199 states and 478 transitions. [2020-10-16 10:49:52,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:49:52,431 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:49:52,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:52,432 INFO L225 Difference]: With dead ends: 199 [2020-10-16 10:49:52,432 INFO L226 Difference]: Without dead ends: 197 [2020-10-16 10:49:52,432 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 [2020-10-16 10:49:52,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-16 10:49:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 157. [2020-10-16 10:49:52,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 10:49:52,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-16 10:49:52,435 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-16 10:49:52,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:52,435 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-16 10:49:52,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:52,435 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-16 10:49:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:49:52,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:52,435 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:52,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-16 10:49:52,636 INFO L429 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:52,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:52,637 INFO L82 PathProgramCache]: Analyzing trace with hash 2094087435, now seen corresponding path program 115 times [2020-10-16 10:49:52,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:52,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815364575] [2020-10-16 10:49:52,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:52,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815364575] [2020-10-16 10:49:52,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498737483] [2020-10-16 10:49:52,766 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:52,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:52,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:53,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:53,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:53,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313478829] [2020-10-16 10:49:53,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:53,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:53,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:53,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:53,072 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-16 10:49:53,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:53,399 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-16 10:49:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:49:53,400 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:49:53,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:53,401 INFO L225 Difference]: With dead ends: 210 [2020-10-16 10:49:53,402 INFO L226 Difference]: Without dead ends: 208 [2020-10-16 10:49:53,402 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 [2020-10-16 10:49:53,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-16 10:49:53,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 155. [2020-10-16 10:49:53,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-16 10:49:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 394 transitions. [2020-10-16 10:49:53,405 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 394 transitions. Word has length 14 [2020-10-16 10:49:53,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:53,405 INFO L481 AbstractCegarLoop]: Abstraction has 155 states and 394 transitions. [2020-10-16 10:49:53,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:53,405 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 394 transitions. [2020-10-16 10:49:53,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:49:53,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:53,405 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:53,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-16 10:49:53,606 INFO L429 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:53,607 INFO L82 PathProgramCache]: Analyzing trace with hash 2094981165, now seen corresponding path program 116 times [2020-10-16 10:49:53,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:53,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154416275] [2020-10-16 10:49:53,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:53,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154416275] [2020-10-16 10:49:53,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [689998943] [2020-10-16 10:49:53,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:53,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:49:53,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:53,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:53,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:49:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:55,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:49:55,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:49:55,980 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376954917] [2020-10-16 10:49:55,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:49:55,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:49:55,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:49:55,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:49:55,981 INFO L87 Difference]: Start difference. First operand 155 states and 394 transitions. Second operand 17 states. [2020-10-16 10:49:56,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:49:56,368 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-16 10:49:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:49:56,369 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:49:56,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:49:56,370 INFO L225 Difference]: With dead ends: 210 [2020-10-16 10:49:56,371 INFO L226 Difference]: Without dead ends: 208 [2020-10-16 10:49:56,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-16 10:49:56,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-16 10:49:56,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2020-10-16 10:49:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-16 10:49:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-16 10:49:56,376 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-16 10:49:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:49:56,376 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-16 10:49:56,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:49:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-16 10:49:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:49:56,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:49:56,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:49:56,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-16 10:49:56,580 INFO L429 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:49:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:49:56,580 INFO L82 PathProgramCache]: Analyzing trace with hash 2094982126, now seen corresponding path program 117 times [2020-10-16 10:49:56,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:49:56,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009608865] [2020-10-16 10:49:56,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:49:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:49:56,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:49:56,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009608865] [2020-10-16 10:49:56,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776668663] [2020-10-16 10:49:56,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:49:56,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-16 10:49:56,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:49:56,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:49:56,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:00,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:00,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:00,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:00,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299923703] [2020-10-16 10:50:00,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:00,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:00,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:00,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-16 10:50:00,135 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-16 10:50:04,365 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-16 10:50:04,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:04,678 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-16 10:50:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 10:50:04,679 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:04,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:04,680 INFO L225 Difference]: With dead ends: 218 [2020-10-16 10:50:04,680 INFO L226 Difference]: Without dead ends: 216 [2020-10-16 10:50:04,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-16 10:50:04,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-16 10:50:04,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-16 10:50:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 10:50:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-16 10:50:04,685 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-16 10:50:04,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:04,685 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-16 10:50:04,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:04,685 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-16 10:50:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:04,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:04,685 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:04,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:04,886 INFO L429 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:04,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:04,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2095010956, now seen corresponding path program 118 times [2020-10-16 10:50:04,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:04,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444512870] [2020-10-16 10:50:04,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:05,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444512870] [2020-10-16 10:50:05,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373955125] [2020-10-16 10:50:05,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:05,052 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:50:05,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:05,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:05,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:05,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:05,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:05,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35580908] [2020-10-16 10:50:05,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:05,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:05,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:05,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:05,359 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-16 10:50:05,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:05,791 INFO L93 Difference]: Finished difference Result 212 states and 507 transitions. [2020-10-16 10:50:05,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 10:50:05,792 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:05,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:05,793 INFO L225 Difference]: With dead ends: 212 [2020-10-16 10:50:05,793 INFO L226 Difference]: Without dead ends: 210 [2020-10-16 10:50:05,794 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 [2020-10-16 10:50:05,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-16 10:50:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153. [2020-10-16 10:50:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-16 10:50:05,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 388 transitions. [2020-10-16 10:50:05,799 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 388 transitions. Word has length 14 [2020-10-16 10:50:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:05,799 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 388 transitions. [2020-10-16 10:50:05,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 388 transitions. [2020-10-16 10:50:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:05,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:05,800 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:06,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:06,011 INFO L429 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:06,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:06,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2122686795, now seen corresponding path program 119 times [2020-10-16 10:50:06,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:06,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105875056] [2020-10-16 10:50:06,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:06,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:06,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105875056] [2020-10-16 10:50:06,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410876437] [2020-10-16 10:50:06,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:06,176 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:50:06,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:06,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:06,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:06,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:06,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:06,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369144686] [2020-10-16 10:50:06,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:06,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:06,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:06,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:06,376 INFO L87 Difference]: Start difference. First operand 153 states and 388 transitions. Second operand 17 states. [2020-10-16 10:50:06,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:06,755 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-16 10:50:06,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:50:06,756 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:06,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:06,757 INFO L225 Difference]: With dead ends: 212 [2020-10-16 10:50:06,757 INFO L226 Difference]: Without dead ends: 210 [2020-10-16 10:50:06,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-10-16 10:50:06,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-16 10:50:06,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2020-10-16 10:50:06,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 10:50:06,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-16 10:50:06,760 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-16 10:50:06,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:06,761 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-16 10:50:06,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:06,761 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-16 10:50:06,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:06,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:06,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:06,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:06,962 INFO L429 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:06,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:06,963 INFO L82 PathProgramCache]: Analyzing trace with hash 2122687756, now seen corresponding path program 120 times [2020-10-16 10:50:06,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:06,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70269847] [2020-10-16 10:50:06,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:07,084 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:07,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70269847] [2020-10-16 10:50:07,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139508509] [2020-10-16 10:50:07,085 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:07,125 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 10:50:07,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:07,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:07,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:07,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:07,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:07,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305015950] [2020-10-16 10:50:07,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:07,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:07,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:07,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:07,333 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-16 10:50:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:07,759 INFO L93 Difference]: Finished difference Result 224 states and 529 transitions. [2020-10-16 10:50:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:50:07,760 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:07,761 INFO L225 Difference]: With dead ends: 224 [2020-10-16 10:50:07,761 INFO L226 Difference]: Without dead ends: 222 [2020-10-16 10:50:07,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-16 10:50:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-16 10:50:07,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 156. [2020-10-16 10:50:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 10:50:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-16 10:50:07,766 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-16 10:50:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:07,766 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-16 10:50:07,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-16 10:50:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:07,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:07,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:07,968 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:07,969 INFO L429 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:07,969 INFO L82 PathProgramCache]: Analyzing trace with hash 2122716586, now seen corresponding path program 121 times [2020-10-16 10:50:07,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:07,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928616607] [2020-10-16 10:50:07,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:08,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928616607] [2020-10-16 10:50:08,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598367094] [2020-10-16 10:50:08,109 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:08,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:08,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:08,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:08,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:08,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:08,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034426461] [2020-10-16 10:50:08,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:08,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:08,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:08,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:08,327 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-16 10:50:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:08,690 INFO L93 Difference]: Finished difference Result 218 states and 519 transitions. [2020-10-16 10:50:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:50:08,691 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:08,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:08,692 INFO L225 Difference]: With dead ends: 218 [2020-10-16 10:50:08,692 INFO L226 Difference]: Without dead ends: 216 [2020-10-16 10:50:08,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-16 10:50:08,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-16 10:50:08,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-16 10:50:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-16 10:50:08,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-16 10:50:08,697 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-16 10:50:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:08,697 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-16 10:50:08,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:08,697 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-16 10:50:08,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:08,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:08,697 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:08,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:08,898 INFO L429 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:08,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:08,899 INFO L82 PathProgramCache]: Analyzing trace with hash 2123641068, now seen corresponding path program 122 times [2020-10-16 10:50:08,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:08,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50026993] [2020-10-16 10:50:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:09,024 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:09,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50026993] [2020-10-16 10:50:09,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153125533] [2020-10-16 10:50:09,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:09,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:50:09,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:09,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:09,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:09,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:09,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:09,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:09,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309946677] [2020-10-16 10:50:09,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:09,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:09,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:09,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:09,258 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-16 10:50:09,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:09,568 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2020-10-16 10:50:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:50:09,569 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:09,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:09,570 INFO L225 Difference]: With dead ends: 206 [2020-10-16 10:50:09,570 INFO L226 Difference]: Without dead ends: 204 [2020-10-16 10:50:09,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-16 10:50:09,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-16 10:50:09,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 154. [2020-10-16 10:50:09,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 10:50:09,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-16 10:50:09,574 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-16 10:50:09,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:09,574 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-16 10:50:09,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-16 10:50:09,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:09,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:09,574 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:09,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-16 10:50:09,775 INFO L429 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:09,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:09,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405971, now seen corresponding path program 123 times [2020-10-16 10:50:09,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:09,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801983132] [2020-10-16 10:50:09,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:09,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801983132] [2020-10-16 10:50:09,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806473550] [2020-10-16 10:50:09,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:09,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-16 10:50:09,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:09,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:09,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:10,169 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:10,170 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:10,170 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:10,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112824942] [2020-10-16 10:50:10,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:10,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:10,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:10,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:10,171 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 17 states. [2020-10-16 10:50:10,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:10,493 INFO L93 Difference]: Finished difference Result 207 states and 495 transitions. [2020-10-16 10:50:10,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:50:10,493 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:10,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:10,495 INFO L225 Difference]: With dead ends: 207 [2020-10-16 10:50:10,495 INFO L226 Difference]: Without dead ends: 205 [2020-10-16 10:50:10,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-16 10:50:10,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-16 10:50:10,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159. [2020-10-16 10:50:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-16 10:50:10,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 403 transitions. [2020-10-16 10:50:10,500 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 403 transitions. Word has length 14 [2020-10-16 10:50:10,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:10,500 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 403 transitions. [2020-10-16 10:50:10,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 403 transitions. [2020-10-16 10:50:10,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:10,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:10,501 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:10,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-16 10:50:10,711 INFO L429 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:10,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:10,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1313405010, now seen corresponding path program 124 times [2020-10-16 10:50:10,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:10,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247867570] [2020-10-16 10:50:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:10,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247867570] [2020-10-16 10:50:10,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875948693] [2020-10-16 10:50:10,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:10,895 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:50:10,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:10,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:10,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:11,146 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:11,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:11,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:11,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089941222] [2020-10-16 10:50:11,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:11,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:11,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:11,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:11,148 INFO L87 Difference]: Start difference. First operand 159 states and 403 transitions. Second operand 17 states. [2020-10-16 10:50:11,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:11,506 INFO L93 Difference]: Finished difference Result 217 states and 516 transitions. [2020-10-16 10:50:11,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 10:50:11,508 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:11,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:11,509 INFO L225 Difference]: With dead ends: 217 [2020-10-16 10:50:11,509 INFO L226 Difference]: Without dead ends: 215 [2020-10-16 10:50:11,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-16 10:50:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-16 10:50:11,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 158. [2020-10-16 10:50:11,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 10:50:11,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 400 transitions. [2020-10-16 10:50:11,512 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 400 transitions. Word has length 14 [2020-10-16 10:50:11,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:11,512 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 400 transitions. [2020-10-16 10:50:11,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:11,518 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 400 transitions. [2020-10-16 10:50:11,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:11,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:11,519 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:11,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-16 10:50:11,720 INFO L429 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:11,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:11,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1313376180, now seen corresponding path program 125 times [2020-10-16 10:50:11,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:11,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809685171] [2020-10-16 10:50:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:11,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809685171] [2020-10-16 10:50:11,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337686526] [2020-10-16 10:50:11,886 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:11,925 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:50:11,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:11,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:11,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:12,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:12,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:12,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:12,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327988397] [2020-10-16 10:50:12,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:12,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:12,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:12,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:12,260 INFO L87 Difference]: Start difference. First operand 158 states and 400 transitions. Second operand 17 states. [2020-10-16 10:50:12,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:12,763 INFO L93 Difference]: Finished difference Result 223 states and 528 transitions. [2020-10-16 10:50:12,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:50:12,764 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:12,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:12,765 INFO L225 Difference]: With dead ends: 223 [2020-10-16 10:50:12,765 INFO L226 Difference]: Without dead ends: 221 [2020-10-16 10:50:12,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=197, Invalid=403, Unknown=0, NotChecked=0, Total=600 [2020-10-16 10:50:12,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-16 10:50:12,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 162. [2020-10-16 10:50:12,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 10:50:12,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 411 transitions. [2020-10-16 10:50:12,770 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 411 transitions. Word has length 14 [2020-10-16 10:50:12,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:12,770 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 411 transitions. [2020-10-16 10:50:12,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:12,770 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 411 transitions. [2020-10-16 10:50:12,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:12,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:12,771 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:12,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-16 10:50:12,974 INFO L429 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:12,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:12,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1312481489, now seen corresponding path program 126 times [2020-10-16 10:50:12,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:12,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213387265] [2020-10-16 10:50:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:13,138 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:13,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213387265] [2020-10-16 10:50:13,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811705123] [2020-10-16 10:50:13,139 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:13,178 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:50:13,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:13,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:13,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:13,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:13,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:13,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906182470] [2020-10-16 10:50:13,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:13,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:13,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:13,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:13,401 INFO L87 Difference]: Start difference. First operand 162 states and 411 transitions. Second operand 17 states. [2020-10-16 10:50:13,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:13,804 INFO L93 Difference]: Finished difference Result 225 states and 531 transitions. [2020-10-16 10:50:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:50:13,805 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:13,806 INFO L225 Difference]: With dead ends: 225 [2020-10-16 10:50:13,806 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 10:50:13,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-16 10:50:13,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 10:50:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 161. [2020-10-16 10:50:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 10:50:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 407 transitions. [2020-10-16 10:50:13,810 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 407 transitions. Word has length 14 [2020-10-16 10:50:13,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:13,810 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 407 transitions. [2020-10-16 10:50:13,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:13,810 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 407 transitions. [2020-10-16 10:50:13,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:13,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:13,811 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:14,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:14,012 INFO L429 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:14,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:14,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1284776820, now seen corresponding path program 127 times [2020-10-16 10:50:14,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:14,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012077395] [2020-10-16 10:50:14,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:14,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012077395] [2020-10-16 10:50:14,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154151722] [2020-10-16 10:50:14,181 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:14,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:14,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:14,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:14,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:14,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165022403] [2020-10-16 10:50:14,440 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:14,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:14,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:14,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:14,441 INFO L87 Difference]: Start difference. First operand 161 states and 407 transitions. Second operand 17 states. [2020-10-16 10:50:14,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:14,740 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2020-10-16 10:50:14,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:50:14,741 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:14,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:14,741 INFO L225 Difference]: With dead ends: 214 [2020-10-16 10:50:14,741 INFO L226 Difference]: Without dead ends: 212 [2020-10-16 10:50:14,742 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 [2020-10-16 10:50:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-16 10:50:14,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 160. [2020-10-16 10:50:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 10:50:14,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 404 transitions. [2020-10-16 10:50:14,745 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 404 transitions. Word has length 14 [2020-10-16 10:50:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:14,745 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 404 transitions. [2020-10-16 10:50:14,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 404 transitions. [2020-10-16 10:50:14,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:14,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:14,746 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:14,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:14,947 INFO L429 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:14,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:14,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1283823508, now seen corresponding path program 128 times [2020-10-16 10:50:14,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:14,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600450399] [2020-10-16 10:50:14,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:15,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600450399] [2020-10-16 10:50:15,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314558896] [2020-10-16 10:50:15,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:15,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:50:15,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:15,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:15,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:15,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:15,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906491946] [2020-10-16 10:50:15,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:15,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:15,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:15,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:15,413 INFO L87 Difference]: Start difference. First operand 160 states and 404 transitions. Second operand 17 states. [2020-10-16 10:50:15,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:15,634 INFO L93 Difference]: Finished difference Result 203 states and 486 transitions. [2020-10-16 10:50:15,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:50:15,635 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:15,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:15,636 INFO L225 Difference]: With dead ends: 203 [2020-10-16 10:50:15,636 INFO L226 Difference]: Without dead ends: 201 [2020-10-16 10:50:15,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2020-10-16 10:50:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-16 10:50:15,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 158. [2020-10-16 10:50:15,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-16 10:50:15,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 397 transitions. [2020-10-16 10:50:15,638 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 397 transitions. Word has length 14 [2020-10-16 10:50:15,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:15,639 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 397 transitions. [2020-10-16 10:50:15,639 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:15,639 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 397 transitions. [2020-10-16 10:50:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:15,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:15,640 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:15,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-16 10:50:15,841 INFO L429 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:15,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:15,841 INFO L82 PathProgramCache]: Analyzing trace with hash 291274206, now seen corresponding path program 129 times [2020-10-16 10:50:15,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:15,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60947912] [2020-10-16 10:50:15,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:16,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60947912] [2020-10-16 10:50:16,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113581006] [2020-10-16 10:50:16,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:16,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:50:16,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:16,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:16,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:16,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:16,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:16,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487246250] [2020-10-16 10:50:16,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:16,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:16,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:16,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:16,237 INFO L87 Difference]: Start difference. First operand 158 states and 397 transitions. Second operand 17 states. [2020-10-16 10:50:16,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:16,319 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-16 10:50:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 10:50:16,320 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:16,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:16,320 INFO L225 Difference]: With dead ends: 212 [2020-10-16 10:50:16,321 INFO L226 Difference]: Without dead ends: 210 [2020-10-16 10:50:16,321 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 [2020-10-16 10:50:16,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-16 10:50:16,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166. [2020-10-16 10:50:16,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 10:50:16,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 421 transitions. [2020-10-16 10:50:16,324 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 421 transitions. Word has length 14 [2020-10-16 10:50:16,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:16,324 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 421 transitions. [2020-10-16 10:50:16,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 421 transitions. [2020-10-16 10:50:16,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:16,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:16,325 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:16,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:16,525 INFO L429 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:16,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:16,526 INFO L82 PathProgramCache]: Analyzing trace with hash 291275167, now seen corresponding path program 130 times [2020-10-16 10:50:16,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:16,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829415452] [2020-10-16 10:50:16,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:16,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:16,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829415452] [2020-10-16 10:50:16,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989047049] [2020-10-16 10:50:16,687 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:16,731 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:50:16,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:16,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:16,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:16,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:16,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:16,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:16,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763999540] [2020-10-16 10:50:16,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:16,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:16,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:16,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:16,926 INFO L87 Difference]: Start difference. First operand 166 states and 421 transitions. Second operand 17 states. [2020-10-16 10:50:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:17,185 INFO L93 Difference]: Finished difference Result 217 states and 513 transitions. [2020-10-16 10:50:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:50:17,186 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:17,186 INFO L225 Difference]: With dead ends: 217 [2020-10-16 10:50:17,186 INFO L226 Difference]: Without dead ends: 215 [2020-10-16 10:50:17,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-10-16 10:50:17,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-16 10:50:17,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 164. [2020-10-16 10:50:17,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 10:50:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-16 10:50:17,190 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-16 10:50:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:17,191 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-16 10:50:17,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-16 10:50:17,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:17,191 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:17,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:17,395 INFO L429 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:17,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:17,395 INFO L82 PathProgramCache]: Analyzing trace with hash 291303997, now seen corresponding path program 131 times [2020-10-16 10:50:17,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:17,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112542018] [2020-10-16 10:50:17,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:17,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:17,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:17,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112542018] [2020-10-16 10:50:17,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207207390] [2020-10-16 10:50:17,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:17,588 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:50:17,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:17,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:17,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:17,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:17,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:17,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:17,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626643463] [2020-10-16 10:50:17,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:17,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:17,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:17,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:17,818 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. [2020-10-16 10:50:18,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:18,168 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-16 10:50:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:50:18,170 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:18,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:18,170 INFO L225 Difference]: With dead ends: 227 [2020-10-16 10:50:18,170 INFO L226 Difference]: Without dead ends: 225 [2020-10-16 10:50:18,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-16 10:50:18,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-16 10:50:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 162. [2020-10-16 10:50:18,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 10:50:18,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 409 transitions. [2020-10-16 10:50:18,174 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 409 transitions. Word has length 14 [2020-10-16 10:50:18,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:18,175 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 409 transitions. [2020-10-16 10:50:18,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:18,175 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 409 transitions. [2020-10-16 10:50:18,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:18,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:18,176 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:18,376 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:18,376 INFO L429 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:18,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:18,377 INFO L82 PathProgramCache]: Analyzing trace with hash 292197727, now seen corresponding path program 132 times [2020-10-16 10:50:18,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:18,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031848748] [2020-10-16 10:50:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:18,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031848748] [2020-10-16 10:50:18,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588363390] [2020-10-16 10:50:18,509 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:18,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:50:18,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:18,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:18,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:18,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:18,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:18,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323647706] [2020-10-16 10:50:18,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:18,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:18,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:18,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:18,777 INFO L87 Difference]: Start difference. First operand 162 states and 409 transitions. Second operand 17 states. [2020-10-16 10:50:19,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:19,192 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-16 10:50:19,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:50:19,193 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:19,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:19,193 INFO L225 Difference]: With dead ends: 227 [2020-10-16 10:50:19,194 INFO L226 Difference]: Without dead ends: 225 [2020-10-16 10:50:19,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-16 10:50:19,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-16 10:50:19,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 164. [2020-10-16 10:50:19,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 10:50:19,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-16 10:50:19,197 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-16 10:50:19,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:19,198 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-16 10:50:19,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:19,198 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-16 10:50:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:19,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:19,198 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:19,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-16 10:50:19,401 INFO L429 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:19,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:19,401 INFO L82 PathProgramCache]: Analyzing trace with hash 292198688, now seen corresponding path program 133 times [2020-10-16 10:50:19,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:19,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422754687] [2020-10-16 10:50:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:19,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422754687] [2020-10-16 10:50:19,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140672366] [2020-10-16 10:50:19,540 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:19,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:19,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:23,256 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:23,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:23,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:23,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807657241] [2020-10-16 10:50:23,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:23,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:23,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:23,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-16 10:50:23,258 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. [2020-10-16 10:50:27,493 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-16 10:50:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:27,830 INFO L93 Difference]: Finished difference Result 237 states and 553 transitions. [2020-10-16 10:50:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 10:50:27,831 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:27,832 INFO L225 Difference]: With dead ends: 237 [2020-10-16 10:50:27,832 INFO L226 Difference]: Without dead ends: 235 [2020-10-16 10:50:27,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=205, Invalid=444, Unknown=1, NotChecked=0, Total=650 [2020-10-16 10:50:27,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-10-16 10:50:27,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 163. [2020-10-16 10:50:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 10:50:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-16 10:50:27,836 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-16 10:50:27,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:27,836 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-16 10:50:27,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:27,836 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-16 10:50:27,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:27,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:27,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:28,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-16 10:50:28,038 INFO L429 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:28,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:28,039 INFO L82 PathProgramCache]: Analyzing trace with hash 292227518, now seen corresponding path program 134 times [2020-10-16 10:50:28,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:28,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566329196] [2020-10-16 10:50:28,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:28,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566329196] [2020-10-16 10:50:28,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963727852] [2020-10-16 10:50:28,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:28,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:50:28,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:28,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:28,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:28,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:28,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:28,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:28,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915495336] [2020-10-16 10:50:28,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:28,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:28,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:28,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:28,472 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-16 10:50:28,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:28,960 INFO L93 Difference]: Finished difference Result 229 states and 539 transitions. [2020-10-16 10:50:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 10:50:28,961 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:28,962 INFO L225 Difference]: With dead ends: 229 [2020-10-16 10:50:28,962 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 10:50:28,962 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 [2020-10-16 10:50:28,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 10:50:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 160. [2020-10-16 10:50:28,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 10:50:28,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 403 transitions. [2020-10-16 10:50:28,966 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 403 transitions. Word has length 14 [2020-10-16 10:50:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:28,966 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 403 transitions. [2020-10-16 10:50:28,966 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 403 transitions. [2020-10-16 10:50:28,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:28,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:28,966 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:29,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 161 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable167 [2020-10-16 10:50:29,167 INFO L429 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:29,168 INFO L82 PathProgramCache]: Analyzing trace with hash 319903357, now seen corresponding path program 135 times [2020-10-16 10:50:29,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:29,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052247326] [2020-10-16 10:50:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:29,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:29,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052247326] [2020-10-16 10:50:29,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429478931] [2020-10-16 10:50:29,284 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:29,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:50:29,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:29,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:29,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:29,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:29,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:29,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987611857] [2020-10-16 10:50:29,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:29,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:29,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:29,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:29,519 INFO L87 Difference]: Start difference. First operand 160 states and 403 transitions. Second operand 17 states. [2020-10-16 10:50:29,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:29,988 INFO L93 Difference]: Finished difference Result 225 states and 529 transitions. [2020-10-16 10:50:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:50:29,989 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:29,990 INFO L225 Difference]: With dead ends: 225 [2020-10-16 10:50:29,990 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 10:50:29,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-10-16 10:50:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 10:50:29,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 163. [2020-10-16 10:50:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 10:50:29,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-16 10:50:29,994 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-16 10:50:29,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:29,994 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-16 10:50:29,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:29,994 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-16 10:50:29,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:29,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:29,994 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:30,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 162 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2020-10-16 10:50:30,195 INFO L429 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:30,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:30,196 INFO L82 PathProgramCache]: Analyzing trace with hash 319904318, now seen corresponding path program 136 times [2020-10-16 10:50:30,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:30,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668162472] [2020-10-16 10:50:30,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:30,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:30,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668162472] [2020-10-16 10:50:30,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773885074] [2020-10-16 10:50:30,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:30,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:50:30,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:30,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:30,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:30,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:30,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:30,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:30,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522060739] [2020-10-16 10:50:30,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:30,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:30,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:30,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:30,558 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-16 10:50:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:31,262 INFO L93 Difference]: Finished difference Result 239 states and 557 transitions. [2020-10-16 10:50:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 10:50:31,263 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:31,264 INFO L225 Difference]: With dead ends: 239 [2020-10-16 10:50:31,264 INFO L226 Difference]: Without dead ends: 237 [2020-10-16 10:50:31,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2020-10-16 10:50:31,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-10-16 10:50:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 163. [2020-10-16 10:50:31,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 10:50:31,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-16 10:50:31,271 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-16 10:50:31,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:31,271 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-16 10:50:31,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:31,271 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-16 10:50:31,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:31,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:31,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:31,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 163 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-10-16 10:50:31,485 INFO L429 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:31,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:31,486 INFO L82 PathProgramCache]: Analyzing trace with hash 319933148, now seen corresponding path program 137 times [2020-10-16 10:50:31,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:31,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159416880] [2020-10-16 10:50:31,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:31,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:31,612 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:31,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159416880] [2020-10-16 10:50:31,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976102725] [2020-10-16 10:50:31,613 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:31,653 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:50:31,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:31,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:31,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:31,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:31,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:31,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141053004] [2020-10-16 10:50:31,834 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:31,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:31,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:31,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:31,835 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-16 10:50:32,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:32,235 INFO L93 Difference]: Finished difference Result 234 states and 550 transitions. [2020-10-16 10:50:32,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:50:32,235 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:32,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:32,236 INFO L225 Difference]: With dead ends: 234 [2020-10-16 10:50:32,236 INFO L226 Difference]: Without dead ends: 232 [2020-10-16 10:50:32,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2020-10-16 10:50:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-16 10:50:32,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 163. [2020-10-16 10:50:32,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 10:50:32,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 412 transitions. [2020-10-16 10:50:32,239 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 412 transitions. Word has length 14 [2020-10-16 10:50:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:32,239 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 412 transitions. [2020-10-16 10:50:32,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 412 transitions. [2020-10-16 10:50:32,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:32,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:32,240 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:32,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 164 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2020-10-16 10:50:32,449 INFO L429 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:32,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:32,449 INFO L82 PathProgramCache]: Analyzing trace with hash 320857630, now seen corresponding path program 138 times [2020-10-16 10:50:32,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:32,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909641836] [2020-10-16 10:50:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:32,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909641836] [2020-10-16 10:50:32,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363608424] [2020-10-16 10:50:32,566 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:32,605 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:50:32,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:32,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:32,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:32,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:32,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:32,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234477798] [2020-10-16 10:50:32,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:32,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:32,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:32,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:32,820 INFO L87 Difference]: Start difference. First operand 163 states and 412 transitions. Second operand 17 states. [2020-10-16 10:50:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:33,321 INFO L93 Difference]: Finished difference Result 218 states and 515 transitions. [2020-10-16 10:50:33,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 10:50:33,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:33,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:33,323 INFO L225 Difference]: With dead ends: 218 [2020-10-16 10:50:33,323 INFO L226 Difference]: Without dead ends: 216 [2020-10-16 10:50:33,323 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=421, Unknown=0, NotChecked=0, Total=600 [2020-10-16 10:50:33,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-16 10:50:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 159. [2020-10-16 10:50:33,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-16 10:50:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 399 transitions. [2020-10-16 10:50:33,327 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 399 transitions. Word has length 14 [2020-10-16 10:50:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:33,327 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 399 transitions. [2020-10-16 10:50:33,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:33,327 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 399 transitions. [2020-10-16 10:50:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:33,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:33,328 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:33,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171,165 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:33,529 INFO L429 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:33,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:33,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1429448084, now seen corresponding path program 139 times [2020-10-16 10:50:33,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:33,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288160298] [2020-10-16 10:50:33,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:33,773 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:33,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288160298] [2020-10-16 10:50:33,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865211842] [2020-10-16 10:50:33,774 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:33,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:33,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:34,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:34,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:34,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:34,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446667142] [2020-10-16 10:50:34,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:34,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:34,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:34,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:34,022 INFO L87 Difference]: Start difference. First operand 159 states and 399 transitions. Second operand 17 states. [2020-10-16 10:50:34,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:34,150 INFO L93 Difference]: Finished difference Result 208 states and 495 transitions. [2020-10-16 10:50:34,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:50:34,151 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:34,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:34,152 INFO L225 Difference]: With dead ends: 208 [2020-10-16 10:50:34,157 INFO L226 Difference]: Without dead ends: 206 [2020-10-16 10:50:34,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-16 10:50:34,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-16 10:50:34,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 165. [2020-10-16 10:50:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-16 10:50:34,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 417 transitions. [2020-10-16 10:50:34,160 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 417 transitions. Word has length 14 [2020-10-16 10:50:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:34,160 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 417 transitions. [2020-10-16 10:50:34,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 417 transitions. [2020-10-16 10:50:34,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:34,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:34,161 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:34,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,166 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:34,362 INFO L429 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:34,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:34,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1429447123, now seen corresponding path program 140 times [2020-10-16 10:50:34,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:34,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602162917] [2020-10-16 10:50:34,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:34,537 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:34,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602162917] [2020-10-16 10:50:34,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956763148] [2020-10-16 10:50:34,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:34,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:50:34,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:34,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:34,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:34,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:34,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:34,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510633747] [2020-10-16 10:50:34,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:34,813 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:34,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:34,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:34,813 INFO L87 Difference]: Start difference. First operand 165 states and 417 transitions. Second operand 17 states. [2020-10-16 10:50:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:35,137 INFO L93 Difference]: Finished difference Result 229 states and 536 transitions. [2020-10-16 10:50:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:50:35,138 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:35,138 INFO L225 Difference]: With dead ends: 229 [2020-10-16 10:50:35,138 INFO L226 Difference]: Without dead ends: 227 [2020-10-16 10:50:35,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2020-10-16 10:50:35,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-16 10:50:35,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 163. [2020-10-16 10:50:35,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 10:50:35,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 411 transitions. [2020-10-16 10:50:35,144 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 411 transitions. Word has length 14 [2020-10-16 10:50:35,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:35,145 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 411 transitions. [2020-10-16 10:50:35,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:35,145 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 411 transitions. [2020-10-16 10:50:35,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:35,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:35,145 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:35,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,167 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:35,346 INFO L429 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1429418293, now seen corresponding path program 141 times [2020-10-16 10:50:35,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:35,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030024461] [2020-10-16 10:50:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:35,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:35,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030024461] [2020-10-16 10:50:35,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663023119] [2020-10-16 10:50:35,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:35,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:50:35,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:35,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:35,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:35,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:35,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:35,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:35,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962541594] [2020-10-16 10:50:35,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:35,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:35,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:35,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:35,759 INFO L87 Difference]: Start difference. First operand 163 states and 411 transitions. Second operand 17 states. [2020-10-16 10:50:36,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:36,163 INFO L93 Difference]: Finished difference Result 235 states and 548 transitions. [2020-10-16 10:50:36,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:50:36,164 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:36,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:36,165 INFO L225 Difference]: With dead ends: 235 [2020-10-16 10:50:36,165 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 10:50:36,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2020-10-16 10:50:36,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 10:50:36,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 161. [2020-10-16 10:50:36,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 10:50:36,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 405 transitions. [2020-10-16 10:50:36,168 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 405 transitions. Word has length 14 [2020-10-16 10:50:36,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:36,168 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 405 transitions. [2020-10-16 10:50:36,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:36,169 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 405 transitions. [2020-10-16 10:50:36,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:36,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:36,169 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:36,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,168 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:36,370 INFO L429 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:36,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:36,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1428524563, now seen corresponding path program 142 times [2020-10-16 10:50:36,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:36,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157958017] [2020-10-16 10:50:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:36,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157958017] [2020-10-16 10:50:36,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326528748] [2020-10-16 10:50:36,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:36,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:50:36,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:36,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:36,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:36,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:36,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:36,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:36,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199331618] [2020-10-16 10:50:36,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:36,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:36,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:36,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:36,789 INFO L87 Difference]: Start difference. First operand 161 states and 405 transitions. Second operand 17 states. [2020-10-16 10:50:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:37,257 INFO L93 Difference]: Finished difference Result 233 states and 544 transitions. [2020-10-16 10:50:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 10:50:37,258 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:37,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:37,258 INFO L225 Difference]: With dead ends: 233 [2020-10-16 10:50:37,258 INFO L226 Difference]: Without dead ends: 231 [2020-10-16 10:50:37,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-16 10:50:37,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-16 10:50:37,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 163. [2020-10-16 10:50:37,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 10:50:37,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 411 transitions. [2020-10-16 10:50:37,262 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 411 transitions. Word has length 14 [2020-10-16 10:50:37,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:37,262 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 411 transitions. [2020-10-16 10:50:37,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:37,262 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 411 transitions. [2020-10-16 10:50:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:37,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:37,263 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:37,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,169 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:37,471 INFO L429 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:37,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1428523602, now seen corresponding path program 143 times [2020-10-16 10:50:37,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:37,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276835724] [2020-10-16 10:50:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:37,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276835724] [2020-10-16 10:50:37,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474846603] [2020-10-16 10:50:37,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:37,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:50:37,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:37,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:37,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:40,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:40,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:40,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063260473] [2020-10-16 10:50:40,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:40,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:40,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=208, Unknown=1, NotChecked=0, Total=272 [2020-10-16 10:50:40,614 INFO L87 Difference]: Start difference. First operand 163 states and 411 transitions. Second operand 17 states. [2020-10-16 10:50:44,914 WARN L193 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-16 10:50:45,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:45,269 INFO L93 Difference]: Finished difference Result 241 states and 560 transitions. [2020-10-16 10:50:45,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:50:45,270 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:45,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:45,271 INFO L225 Difference]: With dead ends: 241 [2020-10-16 10:50:45,271 INFO L226 Difference]: Without dead ends: 239 [2020-10-16 10:50:45,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=211, Invalid=490, Unknown=1, NotChecked=0, Total=702 [2020-10-16 10:50:45,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-10-16 10:50:45,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 163. [2020-10-16 10:50:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 10:50:45,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 410 transitions. [2020-10-16 10:50:45,274 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 410 transitions. Word has length 14 [2020-10-16 10:50:45,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:45,274 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 410 transitions. [2020-10-16 10:50:45,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:45,274 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 410 transitions. [2020-10-16 10:50:45,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:45,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:45,275 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:45,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,170 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:45,476 INFO L429 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1428494772, now seen corresponding path program 144 times [2020-10-16 10:50:45,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:45,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860532911] [2020-10-16 10:50:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:45,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860532911] [2020-10-16 10:50:45,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821314819] [2020-10-16 10:50:45,602 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:45,643 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:50:45,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:45,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:45,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:45,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:45,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:45,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:45,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709882038] [2020-10-16 10:50:45,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:45,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:45,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:45,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:45,911 INFO L87 Difference]: Start difference. First operand 163 states and 410 transitions. Second operand 17 states. [2020-10-16 10:50:46,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:46,424 INFO L93 Difference]: Finished difference Result 233 states and 548 transitions. [2020-10-16 10:50:46,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:50:46,425 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:46,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:46,426 INFO L225 Difference]: With dead ends: 233 [2020-10-16 10:50:46,426 INFO L226 Difference]: Without dead ends: 231 [2020-10-16 10:50:46,427 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 [2020-10-16 10:50:46,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-16 10:50:46,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2020-10-16 10:50:46,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-16 10:50:46,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 401 transitions. [2020-10-16 10:50:46,430 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 401 transitions. Word has length 14 [2020-10-16 10:50:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:46,430 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 401 transitions. [2020-10-16 10:50:46,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:46,430 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 401 transitions. [2020-10-16 10:50:46,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:46,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:46,430 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:46,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 171 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable177 [2020-10-16 10:50:46,631 INFO L429 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:46,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:46,632 INFO L82 PathProgramCache]: Analyzing trace with hash -792218594, now seen corresponding path program 145 times [2020-10-16 10:50:46,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:46,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871513620] [2020-10-16 10:50:46,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:46,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871513620] [2020-10-16 10:50:46,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770752351] [2020-10-16 10:50:46,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:46,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:46,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:47,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:47,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:47,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361589234] [2020-10-16 10:50:47,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:47,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:47,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:47,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:47,047 INFO L87 Difference]: Start difference. First operand 160 states and 401 transitions. Second operand 17 states. [2020-10-16 10:50:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:47,212 INFO L93 Difference]: Finished difference Result 204 states and 486 transitions. [2020-10-16 10:50:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-16 10:50:47,213 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:47,214 INFO L225 Difference]: With dead ends: 204 [2020-10-16 10:50:47,214 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 10:50:47,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-16 10:50:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 10:50:47,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 164. [2020-10-16 10:50:47,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 10:50:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 413 transitions. [2020-10-16 10:50:47,217 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 413 transitions. Word has length 14 [2020-10-16 10:50:47,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:47,217 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 413 transitions. [2020-10-16 10:50:47,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 413 transitions. [2020-10-16 10:50:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:47,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:47,218 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:47,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178,172 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:47,419 INFO L429 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:47,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:47,419 INFO L82 PathProgramCache]: Analyzing trace with hash -792217633, now seen corresponding path program 146 times [2020-10-16 10:50:47,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:47,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180224412] [2020-10-16 10:50:47,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:47,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180224412] [2020-10-16 10:50:47,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935846090] [2020-10-16 10:50:47,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:47,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:50:47,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:47,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:47,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:47,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:47,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:47,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154473279] [2020-10-16 10:50:47,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:47,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:47,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:47,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:47,786 INFO L87 Difference]: Start difference. First operand 164 states and 413 transitions. Second operand 17 states. [2020-10-16 10:50:48,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:48,144 INFO L93 Difference]: Finished difference Result 225 states and 527 transitions. [2020-10-16 10:50:48,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 10:50:48,145 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:48,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:48,145 INFO L225 Difference]: With dead ends: 225 [2020-10-16 10:50:48,146 INFO L226 Difference]: Without dead ends: 223 [2020-10-16 10:50:48,146 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 [2020-10-16 10:50:48,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-16 10:50:48,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 162. [2020-10-16 10:50:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 10:50:48,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 407 transitions. [2020-10-16 10:50:48,149 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 407 transitions. Word has length 14 [2020-10-16 10:50:48,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:48,149 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 407 transitions. [2020-10-16 10:50:48,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 407 transitions. [2020-10-16 10:50:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:48,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:48,150 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:48,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 173 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2020-10-16 10:50:48,351 INFO L429 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:48,351 INFO L82 PathProgramCache]: Analyzing trace with hash -792188803, now seen corresponding path program 147 times [2020-10-16 10:50:48,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:48,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686412190] [2020-10-16 10:50:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:48,481 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:48,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686412190] [2020-10-16 10:50:48,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886095277] [2020-10-16 10:50:48,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:48,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:50:48,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:48,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:48,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:48,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:48,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:48,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157304422] [2020-10-16 10:50:48,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:48,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:48,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:48,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:48,791 INFO L87 Difference]: Start difference. First operand 162 states and 407 transitions. Second operand 17 states. [2020-10-16 10:50:49,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:49,360 INFO L93 Difference]: Finished difference Result 231 states and 539 transitions. [2020-10-16 10:50:49,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-16 10:50:49,361 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:49,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:49,362 INFO L225 Difference]: With dead ends: 231 [2020-10-16 10:50:49,362 INFO L226 Difference]: Without dead ends: 229 [2020-10-16 10:50:49,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=200, Invalid=450, Unknown=0, NotChecked=0, Total=650 [2020-10-16 10:50:49,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-16 10:50:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 161. [2020-10-16 10:50:49,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-16 10:50:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 403 transitions. [2020-10-16 10:50:49,366 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 403 transitions. Word has length 14 [2020-10-16 10:50:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:49,367 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 403 transitions. [2020-10-16 10:50:49,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:49,367 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 403 transitions. [2020-10-16 10:50:49,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:49,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:49,367 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:49,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,174 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:49,568 INFO L429 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:49,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:49,569 INFO L82 PathProgramCache]: Analyzing trace with hash -771662804, now seen corresponding path program 148 times [2020-10-16 10:50:49,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:49,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037722043] [2020-10-16 10:50:49,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:49,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037722043] [2020-10-16 10:50:49,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348269192] [2020-10-16 10:50:49,709 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:49,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:50:49,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:49,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:49,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:49,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:49,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:49,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337327233] [2020-10-16 10:50:49,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:49,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:49,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:49,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:49,950 INFO L87 Difference]: Start difference. First operand 161 states and 403 transitions. Second operand 17 states. [2020-10-16 10:50:50,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:50,157 INFO L93 Difference]: Finished difference Result 200 states and 477 transitions. [2020-10-16 10:50:50,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 10:50:50,158 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:50,158 INFO L225 Difference]: With dead ends: 200 [2020-10-16 10:50:50,158 INFO L226 Difference]: Without dead ends: 198 [2020-10-16 10:50:50,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2020-10-16 10:50:50,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-10-16 10:50:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 163. [2020-10-16 10:50:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-16 10:50:50,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 409 transitions. [2020-10-16 10:50:50,162 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 409 transitions. Word has length 14 [2020-10-16 10:50:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:50,162 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 409 transitions. [2020-10-16 10:50:50,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:50,162 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 409 transitions. [2020-10-16 10:50:50,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:50,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:50,163 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:50,365 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,175 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:50,366 INFO L429 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:50,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:50,366 INFO L82 PathProgramCache]: Analyzing trace with hash -771661843, now seen corresponding path program 149 times [2020-10-16 10:50:50,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:50,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898794838] [2020-10-16 10:50:50,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:50,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898794838] [2020-10-16 10:50:50,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152579764] [2020-10-16 10:50:50,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:50,534 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:50:50,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:50,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:50,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:50,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:50,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:50,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697135704] [2020-10-16 10:50:50,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:50,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:50,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:50,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:50,733 INFO L87 Difference]: Start difference. First operand 163 states and 409 transitions. Second operand 17 states. [2020-10-16 10:50:51,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:51,122 INFO L93 Difference]: Finished difference Result 221 states and 518 transitions. [2020-10-16 10:50:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 10:50:51,122 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:51,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:51,123 INFO L225 Difference]: With dead ends: 221 [2020-10-16 10:50:51,123 INFO L226 Difference]: Without dead ends: 219 [2020-10-16 10:50:51,123 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 [2020-10-16 10:50:51,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-16 10:50:51,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 162. [2020-10-16 10:50:51,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 10:50:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 405 transitions. [2020-10-16 10:50:51,126 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 405 transitions. Word has length 14 [2020-10-16 10:50:51,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:51,126 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 405 transitions. [2020-10-16 10:50:51,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:51,126 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 405 transitions. [2020-10-16 10:50:51,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:51,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:51,127 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:51,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 176 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable182 [2020-10-16 10:50:51,334 INFO L429 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:51,334 INFO L82 PathProgramCache]: Analyzing trace with hash -770999714, now seen corresponding path program 150 times [2020-10-16 10:50:51,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:51,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270229179] [2020-10-16 10:50:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:51,458 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:51,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270229179] [2020-10-16 10:50:51,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649090817] [2020-10-16 10:50:51,459 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:51,501 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:50:51,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:51,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:51,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:51,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:51,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:51,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:51,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454732519] [2020-10-16 10:50:51,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:51,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:51,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:51,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:51,693 INFO L87 Difference]: Start difference. First operand 162 states and 405 transitions. Second operand 17 states. [2020-10-16 10:50:51,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:51,927 INFO L93 Difference]: Finished difference Result 201 states and 476 transitions. [2020-10-16 10:50:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 10:50:51,928 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:51,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:51,929 INFO L225 Difference]: With dead ends: 201 [2020-10-16 10:50:51,929 INFO L226 Difference]: Without dead ends: 199 [2020-10-16 10:50:51,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-10-16 10:50:51,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-16 10:50:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 166. [2020-10-16 10:50:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 10:50:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-16 10:50:51,932 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-16 10:50:51,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:51,933 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-16 10:50:51,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:51,933 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-16 10:50:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:51,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:51,933 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:52,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183,177 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:52,134 INFO L429 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:52,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:52,134 INFO L82 PathProgramCache]: Analyzing trace with hash -770977394, now seen corresponding path program 151 times [2020-10-16 10:50:52,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:52,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756600410] [2020-10-16 10:50:52,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:52,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756600410] [2020-10-16 10:50:52,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740284291] [2020-10-16 10:50:52,243 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:52,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:52,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:52,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:50:52,512 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:52,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:52,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:52,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4379468] [2020-10-16 10:50:52,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:52,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:52,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:52,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:52,513 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-16 10:50:53,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:53,051 INFO L93 Difference]: Finished difference Result 226 states and 539 transitions. [2020-10-16 10:50:53,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:50:53,052 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:53,053 INFO L225 Difference]: With dead ends: 226 [2020-10-16 10:50:53,053 INFO L226 Difference]: Without dead ends: 221 [2020-10-16 10:50:53,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-16 10:50:53,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-16 10:50:53,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 164. [2020-10-16 10:50:53,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 10:50:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 404 transitions. [2020-10-16 10:50:53,056 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 404 transitions. Word has length 14 [2020-10-16 10:50:53,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:53,057 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 404 transitions. [2020-10-16 10:50:53,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:53,057 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 404 transitions. [2020-10-16 10:50:53,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:53,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:53,057 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:53,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,178 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:53,258 INFO L429 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:53,258 INFO L82 PathProgramCache]: Analyzing trace with hash -770969923, now seen corresponding path program 152 times [2020-10-16 10:50:53,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:53,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402686327] [2020-10-16 10:50:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:53,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:53,380 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:53,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402686327] [2020-10-16 10:50:53,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031016868] [2020-10-16 10:50:53,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:53,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:50:53,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:53,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:53,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:53,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:53,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:53,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:53,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426620300] [2020-10-16 10:50:53,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:53,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:53,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:53,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:53,637 INFO L87 Difference]: Start difference. First operand 164 states and 404 transitions. Second operand 17 states. [2020-10-16 10:50:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:54,076 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-16 10:50:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 10:50:54,077 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:54,078 INFO L225 Difference]: With dead ends: 218 [2020-10-16 10:50:54,078 INFO L226 Difference]: Without dead ends: 216 [2020-10-16 10:50:54,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2020-10-16 10:50:54,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-16 10:50:54,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 166. [2020-10-16 10:50:54,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 10:50:54,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-16 10:50:54,087 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-16 10:50:54,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:54,087 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-16 10:50:54,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-16 10:50:54,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:54,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:54,088 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:54,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,179 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:54,288 INFO L429 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:54,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:54,289 INFO L82 PathProgramCache]: Analyzing trace with hash -770948564, now seen corresponding path program 153 times [2020-10-16 10:50:54,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:54,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455645064] [2020-10-16 10:50:54,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:54,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455645064] [2020-10-16 10:50:54,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271307992] [2020-10-16 10:50:54,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:54,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:50:54,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:54,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:54,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:54,629 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:50:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:54,670 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:54,670 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:54,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122726793] [2020-10-16 10:50:54,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:54,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:54,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:54,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:54,672 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-16 10:50:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:55,411 INFO L93 Difference]: Finished difference Result 248 states and 590 transitions. [2020-10-16 10:50:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-16 10:50:55,412 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:55,412 INFO L225 Difference]: With dead ends: 248 [2020-10-16 10:50:55,412 INFO L226 Difference]: Without dead ends: 243 [2020-10-16 10:50:55,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2020-10-16 10:50:55,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-16 10:50:55,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 166. [2020-10-16 10:50:55,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 10:50:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-16 10:50:55,416 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-16 10:50:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:55,416 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-16 10:50:55,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:55,417 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-16 10:50:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:55,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:55,417 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:55,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186,180 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:55,619 INFO L429 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:55,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:55,620 INFO L82 PathProgramCache]: Analyzing trace with hash -770947603, now seen corresponding path program 154 times [2020-10-16 10:50:55,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:55,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626722048] [2020-10-16 10:50:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:55,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:55,730 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:55,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626722048] [2020-10-16 10:50:55,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097385251] [2020-10-16 10:50:55,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:55,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-16 10:50:55,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:55,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:55,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:55,941 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 10:50:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:55,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:55,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:55,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313933011] [2020-10-16 10:50:55,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:55,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:55,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:55,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:55,976 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-16 10:50:56,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:56,534 INFO L93 Difference]: Finished difference Result 238 states and 567 transitions. [2020-10-16 10:50:56,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:50:56,535 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:56,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:56,536 INFO L225 Difference]: With dead ends: 238 [2020-10-16 10:50:56,536 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 10:50:56,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-10-16 10:50:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 10:50:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 162. [2020-10-16 10:50:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 10:50:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 397 transitions. [2020-10-16 10:50:56,539 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 397 transitions. Word has length 14 [2020-10-16 10:50:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:56,539 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 397 transitions. [2020-10-16 10:50:56,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 397 transitions. [2020-10-16 10:50:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:56,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:56,540 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:56,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,181 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:56,741 INFO L429 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:56,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:56,741 INFO L82 PathProgramCache]: Analyzing trace with hash -770739283, now seen corresponding path program 155 times [2020-10-16 10:50:56,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:56,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192329524] [2020-10-16 10:50:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:56,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:56,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192329524] [2020-10-16 10:50:56,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162987431] [2020-10-16 10:50:56,854 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:56,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-16 10:50:56,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:56,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:56,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:57,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:57,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:57,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:57,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284857982] [2020-10-16 10:50:57,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:57,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:57,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:57,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:57,195 INFO L87 Difference]: Start difference. First operand 162 states and 397 transitions. Second operand 17 states. [2020-10-16 10:50:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:57,899 INFO L93 Difference]: Finished difference Result 235 states and 547 transitions. [2020-10-16 10:50:57,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-16 10:50:57,900 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:57,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:57,901 INFO L225 Difference]: With dead ends: 235 [2020-10-16 10:50:57,901 INFO L226 Difference]: Without dead ends: 233 [2020-10-16 10:50:57,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-10-16 10:50:57,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-16 10:50:57,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 164. [2020-10-16 10:50:57,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-16 10:50:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 404 transitions. [2020-10-16 10:50:57,910 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 404 transitions. Word has length 14 [2020-10-16 10:50:57,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:57,911 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 404 transitions. [2020-10-16 10:50:57,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:57,911 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 404 transitions. [2020-10-16 10:50:57,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:57,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:57,911 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:58,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188,182 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:50:58,122 INFO L429 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:58,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:58,123 INFO L82 PathProgramCache]: Analyzing trace with hash -770076193, now seen corresponding path program 156 times [2020-10-16 10:50:58,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:58,123 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178628477] [2020-10-16 10:50:58,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:58,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178628477] [2020-10-16 10:50:58,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282375510] [2020-10-16 10:50:58,235 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:58,276 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-16 10:50:58,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:50:58,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:58,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:58,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:58,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:58,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952142833] [2020-10-16 10:50:58,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:58,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:58,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:58,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:58,531 INFO L87 Difference]: Start difference. First operand 164 states and 404 transitions. Second operand 17 states. [2020-10-16 10:50:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:50:59,218 INFO L93 Difference]: Finished difference Result 252 states and 594 transitions. [2020-10-16 10:50:59,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-16 10:50:59,218 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:50:59,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:50:59,219 INFO L225 Difference]: With dead ends: 252 [2020-10-16 10:50:59,219 INFO L226 Difference]: Without dead ends: 250 [2020-10-16 10:50:59,219 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 [2020-10-16 10:50:59,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-10-16 10:50:59,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 166. [2020-10-16 10:50:59,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-16 10:50:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 411 transitions. [2020-10-16 10:50:59,223 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 411 transitions. Word has length 14 [2020-10-16 10:50:59,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:50:59,224 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 411 transitions. [2020-10-16 10:50:59,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:50:59,224 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 411 transitions. [2020-10-16 10:50:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:50:59,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:50:59,224 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:50:59,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 183 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2020-10-16 10:50:59,425 INFO L429 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:50:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:50:59,426 INFO L82 PathProgramCache]: Analyzing trace with hash -770054834, now seen corresponding path program 157 times [2020-10-16 10:50:59,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:50:59,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916013365] [2020-10-16 10:50:59,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:50:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:59,538 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:59,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916013365] [2020-10-16 10:50:59,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588574067] [2020-10-16 10:50:59,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:50:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:50:59,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:50:59,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:50:59,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:50:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:50:59,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:50:59,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:50:59,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847852753] [2020-10-16 10:50:59,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:50:59,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:50:59,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:50:59,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:50:59,828 INFO L87 Difference]: Start difference. First operand 166 states and 411 transitions. Second operand 17 states. [2020-10-16 10:51:00,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:00,714 INFO L93 Difference]: Finished difference Result 258 states and 617 transitions. [2020-10-16 10:51:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-16 10:51:00,714 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:51:00,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:00,716 INFO L225 Difference]: With dead ends: 258 [2020-10-16 10:51:00,717 INFO L226 Difference]: Without dead ends: 253 [2020-10-16 10:51:00,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=371, Invalid=751, Unknown=0, NotChecked=0, Total=1122 [2020-10-16 10:51:00,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-16 10:51:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 167. [2020-10-16 10:51:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-16 10:51:00,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 416 transitions. [2020-10-16 10:51:00,722 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 416 transitions. Word has length 14 [2020-10-16 10:51:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:00,722 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 416 transitions. [2020-10-16 10:51:00,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:51:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 416 transitions. [2020-10-16 10:51:00,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:51:00,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:00,723 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:00,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 184 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable190 [2020-10-16 10:51:00,932 INFO L429 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:00,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:00,933 INFO L82 PathProgramCache]: Analyzing trace with hash -770053873, now seen corresponding path program 158 times [2020-10-16 10:51:00,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:00,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478808905] [2020-10-16 10:51:00,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:01,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:01,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478808905] [2020-10-16 10:51:01,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092926097] [2020-10-16 10:51:01,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:51:01,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 10:51:01,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:51:01,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:51:01,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:51:03,332 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:51:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:03,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:51:03,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:51:03,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518734704] [2020-10-16 10:51:03,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:51:03,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:03,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:51:03,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=185, Unknown=1, NotChecked=0, Total=272 [2020-10-16 10:51:03,387 INFO L87 Difference]: Start difference. First operand 167 states and 416 transitions. Second operand 17 states. [2020-10-16 10:51:07,687 WARN L193 SmtUtils]: Spent 4.07 s on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-10-16 10:51:11,997 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2020-10-16 10:51:12,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 10:51:12,691 INFO L93 Difference]: Finished difference Result 287 states and 685 transitions. [2020-10-16 10:51:12,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-16 10:51:12,692 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-16 10:51:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 10:51:12,693 INFO L225 Difference]: With dead ends: 287 [2020-10-16 10:51:12,693 INFO L226 Difference]: Without dead ends: 279 [2020-10-16 10:51:12,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=370, Invalid=819, Unknown=1, NotChecked=0, Total=1190 [2020-10-16 10:51:12,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-16 10:51:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 162. [2020-10-16 10:51:12,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-16 10:51:12,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 400 transitions. [2020-10-16 10:51:12,697 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 400 transitions. Word has length 14 [2020-10-16 10:51:12,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 10:51:12,697 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 400 transitions. [2020-10-16 10:51:12,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-16 10:51:12,697 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 400 transitions. [2020-10-16 10:51:12,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 10:51:12,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 10:51:12,698 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 10:51:12,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 185 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable191 [2020-10-16 10:51:12,902 INFO L429 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 10:51:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 10:51:12,902 INFO L82 PathProgramCache]: Analyzing trace with hash -770025043, now seen corresponding path program 159 times [2020-10-16 10:51:12,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 10:51:12,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965103113] [2020-10-16 10:51:12,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 10:51:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 10:51:13,031 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:13,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965103113] [2020-10-16 10:51:13,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139610677] [2020-10-16 10:51:13,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 10:51:13,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-16 10:51:13,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 10:51:13,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-16 10:51:13,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 10:51:13,293 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 10:51:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 10:51:13,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 10:51:13,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-16 10:51:13,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165888098] [2020-10-16 10:51:13,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-16 10:51:13,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 10:51:13,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-16 10:51:13,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-10-16 10:51:13,325 INFO L87 Difference]: Start difference. First operand 162 states and 400 transitions. Second operand 17 states. Received shutdown request... [2020-10-16 10:51:13,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-16 10:51:13,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,186 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 10:51:13,954 WARN L546 AbstractCegarLoop]: Verification canceled [2020-10-16 10:51:13,960 WARN L235 ceAbstractionStarter]: Timeout [2020-10-16 10:51:13,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 10:51:13 BasicIcfg [2020-10-16 10:51:13,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 10:51:13,961 INFO L168 Benchmark]: Toolchain (without parser) took 272906.96 ms. Allocated memory was 140.0 MB in the beginning and 193.5 MB in the end (delta: 53.5 MB). Free memory was 101.6 MB in the beginning and 152.8 MB in the end (delta: -51.2 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:13,962 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-16 10:51:13,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 771.22 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 101.2 MB in the beginning and 166.9 MB in the end (delta: -65.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:13,962 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.38 ms. Allocated memory is still 206.6 MB. Free memory was 166.9 MB in the beginning and 165.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:13,962 INFO L168 Benchmark]: Boogie Preprocessor took 37.82 ms. Allocated memory is still 206.6 MB. Free memory was 165.0 MB in the beginning and 163.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:13,963 INFO L168 Benchmark]: RCFGBuilder took 402.81 ms. Allocated memory is still 206.6 MB. Free memory was 163.0 MB in the beginning and 142.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-10-16 10:51:13,963 INFO L168 Benchmark]: TraceAbstraction took 271642.40 ms. Allocated memory was 206.6 MB in the beginning and 193.5 MB in the end (delta: -13.1 MB). Free memory was 141.7 MB in the beginning and 152.8 MB in the end (delta: -11.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 10:51:13,964 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 771.22 ms. Allocated memory was 140.0 MB in the beginning and 206.6 MB in the end (delta: 66.6 MB). Free memory was 101.2 MB in the beginning and 166.9 MB in the end (delta: -65.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.38 ms. Allocated memory is still 206.6 MB. Free memory was 166.9 MB in the beginning and 165.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.82 ms. Allocated memory is still 206.6 MB. Free memory was 165.0 MB in the beginning and 163.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.81 ms. Allocated memory is still 206.6 MB. Free memory was 163.0 MB in the beginning and 142.6 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 271642.40 ms. Allocated memory was 206.6 MB in the beginning and 193.5 MB in the end (delta: -13.1 MB). Free memory was 141.7 MB in the beginning and 152.8 MB in the end (delta: -11.1 MB). There was no memory consumed. Max. memory is 7.1 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: 1.2s, 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 constructing difference of abstraction (162states) and FLOYD_HOARE automaton (currently 12 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (49 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 271.5s, OverallIterations: 193, TraceHistogramMax: 6, AutomataDifference: 159.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 2507 SDtfs, 17995 SDslu, 17379 SDs, 0 SdLazy, 12254 SolverSat, 4409 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 59.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4867 GetRequests, 911 SyntacticMatches, 169 SemanticMatches, 3787 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19374 ImplicationChecksByTransitivity, 149.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=167occurred in iteration=191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 192 MinimizatonAttempts, 9056 StatesRemovedByMinimization, 192 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 3.0s SatisfiabilityAnalysisTime, 60.9s InterpolantComputationTime, 4754 NumberOfCodeBlocks, 4754 NumberOfCodeBlocksAsserted, 590 NumberOfCheckSat, 4376 ConstructedInterpolants, 11 QuantifiedInterpolants, 461082 SizeOfPredicates, 185 NumberOfNonLiveVariables, 16120 ConjunctsInSsa, 1819 ConjunctsInUnsatCore, 378 InterpolantComputations, 8 PerfectInterpolantSequences, 0/1914 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