/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_longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 22:17:08,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 22:17:08,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 22:17:08,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 22:17:08,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 22:17:08,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 22:17:08,835 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 22:17:08,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 22:17:08,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 22:17:08,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 22:17:08,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 22:17:08,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 22:17:08,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 22:17:08,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 22:17:08,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 22:17:08,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 22:17:08,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 22:17:08,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 22:17:08,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 22:17:08,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 22:17:08,852 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 22:17:08,853 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 22:17:08,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 22:17:08,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 22:17:08,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 22:17:08,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 22:17:08,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 22:17:08,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 22:17:08,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 22:17:08,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 22:17:08,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 22:17:08,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 22:17:08,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 22:17:08,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 22:17:08,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 22:17:08,866 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 22:17:08,867 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-05 22:17:08,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 22:17:08,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 22:17:08,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 22:17:08,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 22:17:08,909 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 22:17:08,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 22:17:08,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 22:17:08,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 22:17:08,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 22:17:08,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 22:17:08,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 22:17:08,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 22:17:08,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 22:17:08,914 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 22:17:08,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 22:17:08,914 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 22:17:08,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 22:17:08,915 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 22:17:08,915 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 22:17:08,915 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 22:17:08,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 22:17:08,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:17:08,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 22:17:08,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-05 22:17:08,916 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 22:17:08,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 22:17:08,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 22:17:08,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 22:17:08,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-05 22:17:08,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-05 22:17:09,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 22:17:09,263 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 22:17:09,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 22:17:09,268 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 22:17:09,268 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 22:17:09,269 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2020-10-05 22:17:09,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f7cdca4/ac746fe550ba4dca9cb0551da035c026/FLAGfe296475b [2020-10-05 22:17:10,034 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 22:17:10,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_bench_longest-1.i [2020-10-05 22:17:10,050 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f7cdca4/ac746fe550ba4dca9cb0551da035c026/FLAGfe296475b [2020-10-05 22:17:10,382 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/87f7cdca4/ac746fe550ba4dca9cb0551da035c026 [2020-10-05 22:17:10,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 22:17:10,394 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 22:17:10,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 22:17:10,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 22:17:10,403 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 22:17:10,404 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:17:10" (1/1) ... [2020-10-05 22:17:10,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f72a01a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:10, skipping insertion in model container [2020-10-05 22:17:10,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 10:17:10" (1/1) ... [2020-10-05 22:17:10,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 22:17:10,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 22:17:10,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:17:10,962 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 22:17:11,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 22:17:11,081 INFO L208 MainTranslator]: Completed translation [2020-10-05 22:17:11,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11 WrapperNode [2020-10-05 22:17:11,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 22:17:11,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 22:17:11,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 22:17:11,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 22:17:11,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,129 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 22:17:11,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 22:17:11,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 22:17:11,130 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 22:17:11,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... [2020-10-05 22:17:11,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 22:17:11,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 22:17:11,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 22:17:11,158 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 22:17:11,158 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 22:17:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-05 22:17:11,225 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-05 22:17:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-05 22:17:11,226 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-05 22:17:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 22:17:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-05 22:17:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 22:17:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 22:17:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-05 22:17:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 22:17:11,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 22:17:11,229 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 22:17:11,602 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 22:17:11,602 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-05 22:17:11,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:17:11 BoogieIcfgContainer [2020-10-05 22:17:11,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 22:17:11,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 22:17:11,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 22:17:11,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 22:17:11,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 10:17:10" (1/3) ... [2020-10-05 22:17:11,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f1d118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:17:11, skipping insertion in model container [2020-10-05 22:17:11,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 10:17:11" (2/3) ... [2020-10-05 22:17:11,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69f1d118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 10:17:11, skipping insertion in model container [2020-10-05 22:17:11,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 10:17:11" (3/3) ... [2020-10-05 22:17:11,613 INFO L109 eAbstractionObserver]: Analyzing ICFG fib_bench_longest-1.i [2020-10-05 22:17:11,623 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 22:17:11,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-05 22:17:11,632 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 22:17:11,633 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 22:17:11,660 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,661 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,661 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,662 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,662 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,662 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,663 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,663 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,663 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,663 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,664 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,664 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,664 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,665 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,665 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,666 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,666 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,666 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,666 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,667 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,667 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,667 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,668 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,668 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,669 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,669 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,669 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,670 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,673 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,674 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,674 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,675 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork0_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,686 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,686 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,687 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,687 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,687 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork1_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 22:17:11,703 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 22:17:11,727 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 22:17:11,727 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 22:17:11,727 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-05 22:17:11,728 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 22:17:11,728 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 22:17:11,728 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 22:17:11,728 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 22:17:11,728 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 22:17:11,750 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 59 places, 57 transitions, 124 flow [2020-10-05 22:17:11,753 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-05 22:17:11,812 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 22:17:11,812 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:17:11,818 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. [2020-10-05 22:17:11,821 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 59 places, 57 transitions, 124 flow [2020-10-05 22:17:11,839 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-05 22:17:11,839 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-05 22:17:11,840 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. [2020-10-05 22:17:11,842 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1032 [2020-10-05 22:17:11,843 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-10-05 22:17:12,950 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-05 22:17:13,091 INFO L206 etLargeBlockEncoding]: Checked pairs total: 988 [2020-10-05 22:17:13,091 INFO L214 etLargeBlockEncoding]: Total number of compositions: 47 [2020-10-05 22:17:13,095 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 40 flow [2020-10-05 22:17:13,106 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-05 22:17:13,108 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-05 22:17:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-05 22:17:13,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:13,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-05 22:17:13,117 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:13,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:13,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1563716626, now seen corresponding path program 1 times [2020-10-05 22:17:13,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:13,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639762413] [2020-10-05 22:17:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:13,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:13,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639762413] [2020-10-05 22:17:13,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:13,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-05 22:17:13,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514016891] [2020-10-05 22:17:13,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-05 22:17:13,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:13,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-05 22:17:13,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-05 22:17:13,411 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-05 22:17:13,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:13,485 INFO L93 Difference]: Finished difference Result 83 states and 212 transitions. [2020-10-05 22:17:13,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:17:13,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-05 22:17:13,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:13,501 INFO L225 Difference]: With dead ends: 83 [2020-10-05 22:17:13,501 INFO L226 Difference]: Without dead ends: 54 [2020-10-05 22:17:13,503 INFO L675 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 [2020-10-05 22:17:13,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-05 22:17:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-10-05 22:17:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-05 22:17:13,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 120 transitions. [2020-10-05 22:17:13,549 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 120 transitions. Word has length 6 [2020-10-05 22:17:13,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:13,549 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 120 transitions. [2020-10-05 22:17:13,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-05 22:17:13,550 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 120 transitions. [2020-10-05 22:17:13,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:17:13,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:13,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:13,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 22:17:13,552 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:13,552 INFO L82 PathProgramCache]: Analyzing trace with hash 956938306, now seen corresponding path program 1 times [2020-10-05 22:17:13,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:13,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977452406] [2020-10-05 22:17:13,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:13,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:13,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977452406] [2020-10-05 22:17:13,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:13,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:17:13,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280223602] [2020-10-05 22:17:13,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:17:13,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:13,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:17:13,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:17:13,660 INFO L87 Difference]: Start difference. First operand 50 states and 120 transitions. Second operand 5 states. [2020-10-05 22:17:13,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:13,713 INFO L93 Difference]: Finished difference Result 80 states and 186 transitions. [2020-10-05 22:17:13,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:13,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 22:17:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:13,716 INFO L225 Difference]: With dead ends: 80 [2020-10-05 22:17:13,716 INFO L226 Difference]: Without dead ends: 75 [2020-10-05 22:17:13,717 INFO L675 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 [2020-10-05 22:17:13,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-05 22:17:13,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 55. [2020-10-05 22:17:13,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-05 22:17:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 136 transitions. [2020-10-05 22:17:13,727 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 136 transitions. Word has length 8 [2020-10-05 22:17:13,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:13,728 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 136 transitions. [2020-10-05 22:17:13,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:17:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 136 transitions. [2020-10-05 22:17:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:17:13,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:13,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:13,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 22:17:13,730 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:13,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:13,731 INFO L82 PathProgramCache]: Analyzing trace with hash 507192011, now seen corresponding path program 1 times [2020-10-05 22:17:13,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:13,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220483000] [2020-10-05 22:17:13,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:13,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:13,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:13,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220483000] [2020-10-05 22:17:13,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:13,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:17:13,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446695291] [2020-10-05 22:17:13,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:17:13,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:13,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:17:13,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:17:13,814 INFO L87 Difference]: Start difference. First operand 55 states and 136 transitions. Second operand 5 states. [2020-10-05 22:17:13,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:13,840 INFO L93 Difference]: Finished difference Result 73 states and 170 transitions. [2020-10-05 22:17:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 22:17:13,841 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 22:17:13,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:13,843 INFO L225 Difference]: With dead ends: 73 [2020-10-05 22:17:13,843 INFO L226 Difference]: Without dead ends: 70 [2020-10-05 22:17:13,843 INFO L675 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 [2020-10-05 22:17:13,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-05 22:17:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-10-05 22:17:13,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-05 22:17:13,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 152 transitions. [2020-10-05 22:17:13,853 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 152 transitions. Word has length 8 [2020-10-05 22:17:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:13,853 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 152 transitions. [2020-10-05 22:17:13,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:17:13,854 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 152 transitions. [2020-10-05 22:17:13,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 22:17:13,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:13,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:13,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-05 22:17:13,855 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:13,856 INFO L82 PathProgramCache]: Analyzing trace with hash 507214331, now seen corresponding path program 2 times [2020-10-05 22:17:13,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:13,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737092817] [2020-10-05 22:17:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:13,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:13,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737092817] [2020-10-05 22:17:13,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:13,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 22:17:13,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577845729] [2020-10-05 22:17:13,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 22:17:13,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:13,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 22:17:13,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 22:17:13,922 INFO L87 Difference]: Start difference. First operand 64 states and 152 transitions. Second operand 5 states. [2020-10-05 22:17:13,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:13,991 INFO L93 Difference]: Finished difference Result 86 states and 202 transitions. [2020-10-05 22:17:13,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:13,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-05 22:17:13,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:13,994 INFO L225 Difference]: With dead ends: 86 [2020-10-05 22:17:13,994 INFO L226 Difference]: Without dead ends: 80 [2020-10-05 22:17:13,994 INFO L675 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 [2020-10-05 22:17:13,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-05 22:17:14,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-05 22:17:14,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-05 22:17:14,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 157 transitions. [2020-10-05 22:17:14,003 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 157 transitions. Word has length 8 [2020-10-05 22:17:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:14,003 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 157 transitions. [2020-10-05 22:17:14,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 22:17:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 157 transitions. [2020-10-05 22:17:14,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:17:14,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:14,005 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:14,005 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 22:17:14,005 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:14,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:14,006 INFO L82 PathProgramCache]: Analyzing trace with hash -399661872, now seen corresponding path program 2 times [2020-10-05 22:17:14,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:14,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973053553] [2020-10-05 22:17:14,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:14,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:14,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973053553] [2020-10-05 22:17:14,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711279237] [2020-10-05 22:17:14,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:14,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:14,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:14,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:17:14,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:14,220 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:14,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:14,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2020-10-05 22:17:14,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869227352] [2020-10-05 22:17:14,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 22:17:14,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:14,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 22:17:14,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-05 22:17:14,248 INFO L87 Difference]: Start difference. First operand 66 states and 157 transitions. Second operand 10 states. [2020-10-05 22:17:14,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:14,346 INFO L93 Difference]: Finished difference Result 101 states and 235 transitions. [2020-10-05 22:17:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:14,346 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2020-10-05 22:17:14,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:14,348 INFO L225 Difference]: With dead ends: 101 [2020-10-05 22:17:14,348 INFO L226 Difference]: Without dead ends: 96 [2020-10-05 22:17:14,348 INFO L675 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 [2020-10-05 22:17:14,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-05 22:17:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 71. [2020-10-05 22:17:14,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-05 22:17:14,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 173 transitions. [2020-10-05 22:17:14,356 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 173 transitions. Word has length 9 [2020-10-05 22:17:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:14,356 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 173 transitions. [2020-10-05 22:17:14,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 22:17:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 173 transitions. [2020-10-05 22:17:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:17:14,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:14,358 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:14,559 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:14,560 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:14,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1456916488, now seen corresponding path program 3 times [2020-10-05 22:17:14,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:14,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292870807] [2020-10-05 22:17:14,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:14,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:14,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292870807] [2020-10-05 22:17:14,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911249268] [2020-10-05 22:17:14,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:14,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:14,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:14,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:17:14,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:14,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:14,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 22:17:14,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064468922] [2020-10-05 22:17:14,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:17:14,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:14,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:17:14,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:14,789 INFO L87 Difference]: Start difference. First operand 71 states and 173 transitions. Second operand 9 states. [2020-10-05 22:17:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:14,820 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-10-05 22:17:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:17:14,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 22:17:14,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:14,822 INFO L225 Difference]: With dead ends: 84 [2020-10-05 22:17:14,822 INFO L226 Difference]: Without dead ends: 81 [2020-10-05 22:17:14,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:14,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-05 22:17:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2020-10-05 22:17:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-05 22:17:14,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 179 transitions. [2020-10-05 22:17:14,830 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 179 transitions. Word has length 9 [2020-10-05 22:17:14,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:14,830 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 179 transitions. [2020-10-05 22:17:14,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:17:14,831 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 179 transitions. [2020-10-05 22:17:14,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:17:14,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:14,832 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:15,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:15,046 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:15,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1456224568, now seen corresponding path program 4 times [2020-10-05 22:17:15,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:15,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744426370] [2020-10-05 22:17:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:15,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744426370] [2020-10-05 22:17:15,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774628763] [2020-10-05 22:17:15,111 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:17:15,158 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:15,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:15,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:17:15,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:15,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:15,214 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 22:17:15,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668333934] [2020-10-05 22:17:15,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:17:15,215 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:15,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:17:15,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:15,216 INFO L87 Difference]: Start difference. First operand 74 states and 179 transitions. Second operand 9 states. [2020-10-05 22:17:15,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:15,264 INFO L93 Difference]: Finished difference Result 90 states and 213 transitions. [2020-10-05 22:17:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:15,265 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 22:17:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:15,266 INFO L225 Difference]: With dead ends: 90 [2020-10-05 22:17:15,266 INFO L226 Difference]: Without dead ends: 87 [2020-10-05 22:17:15,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-05 22:17:15,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-05 22:17:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 76. [2020-10-05 22:17:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-05 22:17:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 186 transitions. [2020-10-05 22:17:15,273 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 186 transitions. Word has length 9 [2020-10-05 22:17:15,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:15,274 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 186 transitions. [2020-10-05 22:17:15,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:17:15,274 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 186 transitions. [2020-10-05 22:17:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-05 22:17:15,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:15,275 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:15,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:15,489 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:15,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:15,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1456202248, now seen corresponding path program 5 times [2020-10-05 22:17:15,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:15,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767144319] [2020-10-05 22:17:15,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:15,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767144319] [2020-10-05 22:17:15,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968928905] [2020-10-05 22:17:15,541 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:15,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:15,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:15,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 22:17:15,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:15,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:15,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:15,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2020-10-05 22:17:15,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146388778] [2020-10-05 22:17:15,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:17:15,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:15,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:17:15,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:15,658 INFO L87 Difference]: Start difference. First operand 76 states and 186 transitions. Second operand 9 states. [2020-10-05 22:17:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:15,750 INFO L93 Difference]: Finished difference Result 99 states and 237 transitions. [2020-10-05 22:17:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:15,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 9 [2020-10-05 22:17:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:15,751 INFO L225 Difference]: With dead ends: 99 [2020-10-05 22:17:15,751 INFO L226 Difference]: Without dead ends: 93 [2020-10-05 22:17:15,752 INFO L675 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 [2020-10-05 22:17:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-05 22:17:15,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 77. [2020-10-05 22:17:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-05 22:17:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 190 transitions. [2020-10-05 22:17:15,758 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 190 transitions. Word has length 9 [2020-10-05 22:17:15,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:15,758 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 190 transitions. [2020-10-05 22:17:15,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:17:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 190 transitions. [2020-10-05 22:17:15,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:15,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:15,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:15,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:15,974 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash 483638869, now seen corresponding path program 1 times [2020-10-05 22:17:15,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:15,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894949137] [2020-10-05 22:17:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894949137] [2020-10-05 22:17:16,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:16,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:17:16,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845526186] [2020-10-05 22:17:16,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:17:16,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:17:16,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:17:16,035 INFO L87 Difference]: Start difference. First operand 77 states and 190 transitions. Second operand 6 states. [2020-10-05 22:17:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,063 INFO L93 Difference]: Finished difference Result 92 states and 220 transitions. [2020-10-05 22:17:16,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 22:17:16,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:17:16,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,065 INFO L225 Difference]: With dead ends: 92 [2020-10-05 22:17:16,065 INFO L226 Difference]: Without dead ends: 90 [2020-10-05 22:17:16,065 INFO L675 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 [2020-10-05 22:17:16,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-05 22:17:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2020-10-05 22:17:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-05 22:17:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 194 transitions. [2020-10-05 22:17:16,071 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 194 transitions. Word has length 10 [2020-10-05 22:17:16,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,072 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 194 transitions. [2020-10-05 22:17:16,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:17:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 194 transitions. [2020-10-05 22:17:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-05 22:17:16,074 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,074 INFO L82 PathProgramCache]: Analyzing trace with hash 484301959, now seen corresponding path program 2 times [2020-10-05 22:17:16,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384397672] [2020-10-05 22:17:16,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384397672] [2020-10-05 22:17:16,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:16,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:17:16,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507163589] [2020-10-05 22:17:16,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:17:16,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:17:16,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:17:16,139 INFO L87 Difference]: Start difference. First operand 79 states and 194 transitions. Second operand 6 states. [2020-10-05 22:17:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,189 INFO L93 Difference]: Finished difference Result 100 states and 234 transitions. [2020-10-05 22:17:16,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:16,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:17:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,191 INFO L225 Difference]: With dead ends: 100 [2020-10-05 22:17:16,191 INFO L226 Difference]: Without dead ends: 98 [2020-10-05 22:17:16,192 INFO L675 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 [2020-10-05 22:17:16,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-05 22:17:16,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 83. [2020-10-05 22:17:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-05 22:17:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 200 transitions. [2020-10-05 22:17:16,197 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 200 transitions. Word has length 10 [2020-10-05 22:17:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,198 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 200 transitions. [2020-10-05 22:17:16,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:17:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 200 transitions. [2020-10-05 22:17:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,199 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-05 22:17:16,200 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,200 INFO L82 PathProgramCache]: Analyzing trace with hash 484324279, now seen corresponding path program 3 times [2020-10-05 22:17:16,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,201 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116601793] [2020-10-05 22:17:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116601793] [2020-10-05 22:17:16,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:16,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:17:16,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491283857] [2020-10-05 22:17:16,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:17:16,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:17:16,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:17:16,258 INFO L87 Difference]: Start difference. First operand 83 states and 200 transitions. Second operand 6 states. [2020-10-05 22:17:16,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,347 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-05 22:17:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:16,348 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:17:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,349 INFO L225 Difference]: With dead ends: 105 [2020-10-05 22:17:16,349 INFO L226 Difference]: Without dead ends: 100 [2020-10-05 22:17:16,349 INFO L675 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 [2020-10-05 22:17:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-05 22:17:16,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-05 22:17:16,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 22:17:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 198 transitions. [2020-10-05 22:17:16,354 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 198 transitions. Word has length 10 [2020-10-05 22:17:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,355 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 198 transitions. [2020-10-05 22:17:16,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:17:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 198 transitions. [2020-10-05 22:17:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,356 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-05 22:17:16,356 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,357 INFO L82 PathProgramCache]: Analyzing trace with hash 484353109, now seen corresponding path program 4 times [2020-10-05 22:17:16,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247455272] [2020-10-05 22:17:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247455272] [2020-10-05 22:17:16,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 22:17:16,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-05 22:17:16,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442433252] [2020-10-05 22:17:16,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 22:17:16,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 22:17:16,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-05 22:17:16,426 INFO L87 Difference]: Start difference. First operand 82 states and 198 transitions. Second operand 6 states. [2020-10-05 22:17:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,512 INFO L93 Difference]: Finished difference Result 105 states and 246 transitions. [2020-10-05 22:17:16,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:16,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-05 22:17:16,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,514 INFO L225 Difference]: With dead ends: 105 [2020-10-05 22:17:16,514 INFO L226 Difference]: Without dead ends: 100 [2020-10-05 22:17:16,515 INFO L675 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 [2020-10-05 22:17:16,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-05 22:17:16,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 82. [2020-10-05 22:17:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-05 22:17:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 194 transitions. [2020-10-05 22:17:16,521 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 194 transitions. Word has length 10 [2020-10-05 22:17:16,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,522 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 194 transitions. [2020-10-05 22:17:16,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 22:17:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 194 transitions. [2020-10-05 22:17:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,523 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:16,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-05 22:17:16,524 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:16,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:16,524 INFO L82 PathProgramCache]: Analyzing trace with hash 495405570, now seen corresponding path program 3 times [2020-10-05 22:17:16,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:16,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871334599] [2020-10-05 22:17:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:16,611 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871334599] [2020-10-05 22:17:16,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913986851] [2020-10-05 22:17:16,612 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:16,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:16,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:16,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:16,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:16,721 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:16,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:16,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2020-10-05 22:17:16,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910954682] [2020-10-05 22:17:16,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-05 22:17:16,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:16,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-05 22:17:16,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-05 22:17:16,746 INFO L87 Difference]: Start difference. First operand 82 states and 194 transitions. Second operand 12 states. [2020-10-05 22:17:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:16,843 INFO L93 Difference]: Finished difference Result 122 states and 284 transitions. [2020-10-05 22:17:16,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:16,844 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 10 [2020-10-05 22:17:16,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:16,845 INFO L225 Difference]: With dead ends: 122 [2020-10-05 22:17:16,845 INFO L226 Difference]: Without dead ends: 117 [2020-10-05 22:17:16,845 INFO L675 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 [2020-10-05 22:17:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-05 22:17:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-10-05 22:17:16,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-05 22:17:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 215 transitions. [2020-10-05 22:17:16,849 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 215 transitions. Word has length 10 [2020-10-05 22:17:16,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:16,850 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 215 transitions. [2020-10-05 22:17:16,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-05 22:17:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 215 transitions. [2020-10-05 22:17:16,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:16,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:16,851 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:17,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-05 22:17:17,063 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:17,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:17,064 INFO L82 PathProgramCache]: Analyzing trace with hash 2080229483, now seen corresponding path program 6 times [2020-10-05 22:17:17,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:17,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277670340] [2020-10-05 22:17:17,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:17,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:17,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277670340] [2020-10-05 22:17:17,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184087270] [2020-10-05 22:17:17,143 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:17,190 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:17,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:17,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:17,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:17,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:17,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:17,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:17,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080416569] [2020-10-05 22:17:17,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:17,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:17,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:17,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:17,273 INFO L87 Difference]: Start difference. First operand 88 states and 215 transitions. Second operand 11 states. [2020-10-05 22:17:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:17,306 INFO L93 Difference]: Finished difference Result 108 states and 255 transitions. [2020-10-05 22:17:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:17,307 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 22:17:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:17,308 INFO L225 Difference]: With dead ends: 108 [2020-10-05 22:17:17,308 INFO L226 Difference]: Without dead ends: 105 [2020-10-05 22:17:17,308 INFO L675 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 [2020-10-05 22:17:17,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-05 22:17:17,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2020-10-05 22:17:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-05 22:17:17,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 221 transitions. [2020-10-05 22:17:17,313 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 221 transitions. Word has length 10 [2020-10-05 22:17:17,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:17,313 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 221 transitions. [2020-10-05 22:17:17,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:17,313 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 221 transitions. [2020-10-05 22:17:17,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:17,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:17,314 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:17,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:17,525 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:17,526 INFO L82 PathProgramCache]: Analyzing trace with hash 2101679003, now seen corresponding path program 7 times [2020-10-05 22:17:17,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:17,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65665444] [2020-10-05 22:17:17,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:17,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65665444] [2020-10-05 22:17:17,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36710860] [2020-10-05 22:17:17,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:17,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:17,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:17,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:17,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:17,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:17,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801929320] [2020-10-05 22:17:17,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:17,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:17,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:17,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:17,727 INFO L87 Difference]: Start difference. First operand 91 states and 221 transitions. Second operand 11 states. [2020-10-05 22:17:17,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:17,779 INFO L93 Difference]: Finished difference Result 116 states and 270 transitions. [2020-10-05 22:17:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:17,779 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 22:17:17,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:17,781 INFO L225 Difference]: With dead ends: 116 [2020-10-05 22:17:17,781 INFO L226 Difference]: Without dead ends: 113 [2020-10-05 22:17:17,781 INFO L675 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 [2020-10-05 22:17:17,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-05 22:17:17,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2020-10-05 22:17:17,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-05 22:17:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 223 transitions. [2020-10-05 22:17:17,787 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 223 transitions. Word has length 10 [2020-10-05 22:17:17,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:17,787 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 223 transitions. [2020-10-05 22:17:17,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 223 transitions. [2020-10-05 22:17:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:17,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:17,788 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:18,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-05 22:17:18,001 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:18,001 INFO L82 PathProgramCache]: Analyzing trace with hash 2102370923, now seen corresponding path program 8 times [2020-10-05 22:17:18,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:18,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219310140] [2020-10-05 22:17:18,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:18,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:18,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219310140] [2020-10-05 22:17:18,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326749596] [2020-10-05 22:17:18,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:18,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:18,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:18,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:18,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:18,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:18,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:18,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020948936] [2020-10-05 22:17:18,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:18,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:18,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:18,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:18,234 INFO L87 Difference]: Start difference. First operand 92 states and 223 transitions. Second operand 11 states. [2020-10-05 22:17:18,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:18,326 INFO L93 Difference]: Finished difference Result 115 states and 270 transitions. [2020-10-05 22:17:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:18,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 22:17:18,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:18,328 INFO L225 Difference]: With dead ends: 115 [2020-10-05 22:17:18,328 INFO L226 Difference]: Without dead ends: 112 [2020-10-05 22:17:18,328 INFO L675 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 [2020-10-05 22:17:18,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-05 22:17:18,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2020-10-05 22:17:18,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-05 22:17:18,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 230 transitions. [2020-10-05 22:17:18,333 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 230 transitions. Word has length 10 [2020-10-05 22:17:18,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:18,333 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 230 transitions. [2020-10-05 22:17:18,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:18,333 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 230 transitions. [2020-10-05 22:17:18,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-05 22:17:18,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:18,334 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:18,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-05 22:17:18,546 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:18,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:18,546 INFO L82 PathProgramCache]: Analyzing trace with hash 2102393243, now seen corresponding path program 9 times [2020-10-05 22:17:18,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:18,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896922340] [2020-10-05 22:17:18,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:18,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:18,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896922340] [2020-10-05 22:17:18,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589630427] [2020-10-05 22:17:18,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:18,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:18,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:18,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:18,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:18,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:18,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:18,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:18,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110393164] [2020-10-05 22:17:18,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:18,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:18,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:18,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:18,738 INFO L87 Difference]: Start difference. First operand 94 states and 230 transitions. Second operand 11 states. [2020-10-05 22:17:18,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:18,836 INFO L93 Difference]: Finished difference Result 124 states and 294 transitions. [2020-10-05 22:17:18,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:18,837 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 10 [2020-10-05 22:17:18,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:18,838 INFO L225 Difference]: With dead ends: 124 [2020-10-05 22:17:18,838 INFO L226 Difference]: Without dead ends: 118 [2020-10-05 22:17:18,838 INFO L675 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 [2020-10-05 22:17:18,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-05 22:17:18,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 94. [2020-10-05 22:17:18,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-05 22:17:18,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 232 transitions. [2020-10-05 22:17:18,842 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 232 transitions. Word has length 10 [2020-10-05 22:17:18,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:18,843 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 232 transitions. [2020-10-05 22:17:18,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:18,843 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 232 transitions. [2020-10-05 22:17:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:18,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:18,844 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:19,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-05 22:17:19,054 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:19,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:19,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2107902445, now seen corresponding path program 5 times [2020-10-05 22:17:19,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:19,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089332924] [2020-10-05 22:17:19,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:19,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089332924] [2020-10-05 22:17:19,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604791860] [2020-10-05 22:17:19,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:19,168 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:19,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:19,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:19,268 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:19,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:19,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535417316] [2020-10-05 22:17:19,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:19,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:19,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:19,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:19,271 INFO L87 Difference]: Start difference. First operand 94 states and 232 transitions. Second operand 11 states. [2020-10-05 22:17:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:19,323 INFO L93 Difference]: Finished difference Result 113 states and 270 transitions. [2020-10-05 22:17:19,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-05 22:17:19,323 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:19,325 INFO L225 Difference]: With dead ends: 113 [2020-10-05 22:17:19,325 INFO L226 Difference]: Without dead ends: 111 [2020-10-05 22:17:19,325 INFO L675 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 [2020-10-05 22:17:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-05 22:17:19,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2020-10-05 22:17:19,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-05 22:17:19,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 238 transitions. [2020-10-05 22:17:19,329 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 238 transitions. Word has length 11 [2020-10-05 22:17:19,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:19,330 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 238 transitions. [2020-10-05 22:17:19,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:19,330 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 238 transitions. [2020-10-05 22:17:19,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:19,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:19,331 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:19,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-05 22:17:19,542 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:19,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:19,543 INFO L82 PathProgramCache]: Analyzing trace with hash 2107903406, now seen corresponding path program 6 times [2020-10-05 22:17:19,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:19,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418107429] [2020-10-05 22:17:19,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:19,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:19,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418107429] [2020-10-05 22:17:19,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815331514] [2020-10-05 22:17:19,619 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:19,681 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:19,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:19,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:19,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:19,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:19,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:19,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884127519] [2020-10-05 22:17:19,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:19,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:19,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:19,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:19,769 INFO L87 Difference]: Start difference. First operand 96 states and 238 transitions. Second operand 11 states. [2020-10-05 22:17:19,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:19,844 INFO L93 Difference]: Finished difference Result 118 states and 280 transitions. [2020-10-05 22:17:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:19,844 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:19,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:19,845 INFO L225 Difference]: With dead ends: 118 [2020-10-05 22:17:19,846 INFO L226 Difference]: Without dead ends: 116 [2020-10-05 22:17:19,846 INFO L675 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 [2020-10-05 22:17:19,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-05 22:17:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 97. [2020-10-05 22:17:19,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-05 22:17:19,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 239 transitions. [2020-10-05 22:17:19,852 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 239 transitions. Word has length 11 [2020-10-05 22:17:19,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:19,852 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 239 transitions. [2020-10-05 22:17:19,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 239 transitions. [2020-10-05 22:17:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:19,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:19,867 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:20,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:20,079 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:20,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:20,080 INFO L82 PathProgramCache]: Analyzing trace with hash 2107932236, now seen corresponding path program 7 times [2020-10-05 22:17:20,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:20,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819314822] [2020-10-05 22:17:20,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:20,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819314822] [2020-10-05 22:17:20,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59723513] [2020-10-05 22:17:20,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:20,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:20,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:20,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:20,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:20,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088941863] [2020-10-05 22:17:20,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:20,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:20,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:20,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:20,278 INFO L87 Difference]: Start difference. First operand 97 states and 239 transitions. Second operand 11 states. [2020-10-05 22:17:20,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:20,353 INFO L93 Difference]: Finished difference Result 119 states and 282 transitions. [2020-10-05 22:17:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:20,358 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:20,359 INFO L225 Difference]: With dead ends: 119 [2020-10-05 22:17:20,359 INFO L226 Difference]: Without dead ends: 117 [2020-10-05 22:17:20,360 INFO L675 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 [2020-10-05 22:17:20,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-05 22:17:20,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-10-05 22:17:20,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-05 22:17:20,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 241 transitions. [2020-10-05 22:17:20,364 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 241 transitions. Word has length 11 [2020-10-05 22:17:20,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:20,364 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 241 transitions. [2020-10-05 22:17:20,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:20,365 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 241 transitions. [2020-10-05 22:17:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:20,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:20,365 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:20,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:20,573 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:20,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:20,573 INFO L82 PathProgramCache]: Analyzing trace with hash 2128458235, now seen corresponding path program 8 times [2020-10-05 22:17:20,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:20,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957627991] [2020-10-05 22:17:20,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:20,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957627991] [2020-10-05 22:17:20,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419866112] [2020-10-05 22:17:20,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:20,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:20,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:20,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:20,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:20,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:20,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:20,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373084761] [2020-10-05 22:17:20,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:20,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:20,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:20,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:20,785 INFO L87 Difference]: Start difference. First operand 98 states and 241 transitions. Second operand 11 states. [2020-10-05 22:17:20,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:20,843 INFO L93 Difference]: Finished difference Result 122 states and 288 transitions. [2020-10-05 22:17:20,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:20,843 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:20,844 INFO L225 Difference]: With dead ends: 122 [2020-10-05 22:17:20,844 INFO L226 Difference]: Without dead ends: 120 [2020-10-05 22:17:20,845 INFO L675 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 [2020-10-05 22:17:20,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-05 22:17:20,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2020-10-05 22:17:20,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-05 22:17:20,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 247 transitions. [2020-10-05 22:17:20,849 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 247 transitions. Word has length 11 [2020-10-05 22:17:20,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:20,849 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 247 transitions. [2020-10-05 22:17:20,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:20,849 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 247 transitions. [2020-10-05 22:17:20,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:20,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:20,850 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:21,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-05 22:17:21,060 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:21,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:21,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2128459196, now seen corresponding path program 9 times [2020-10-05 22:17:21,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:21,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251466443] [2020-10-05 22:17:21,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:21,130 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:21,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251466443] [2020-10-05 22:17:21,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669121658] [2020-10-05 22:17:21,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:21,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:21,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:21,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:21,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:21,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:21,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:21,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:21,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579764742] [2020-10-05 22:17:21,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:21,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:21,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:21,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:21,247 INFO L87 Difference]: Start difference. First operand 100 states and 247 transitions. Second operand 11 states. [2020-10-05 22:17:21,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:21,348 INFO L93 Difference]: Finished difference Result 123 states and 290 transitions. [2020-10-05 22:17:21,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:21,349 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:21,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:21,350 INFO L225 Difference]: With dead ends: 123 [2020-10-05 22:17:21,350 INFO L226 Difference]: Without dead ends: 121 [2020-10-05 22:17:21,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-05 22:17:21,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-05 22:17:21,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 99. [2020-10-05 22:17:21,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 22:17:21,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 243 transitions. [2020-10-05 22:17:21,355 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 243 transitions. Word has length 11 [2020-10-05 22:17:21,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:21,355 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 243 transitions. [2020-10-05 22:17:21,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:21,355 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 243 transitions. [2020-10-05 22:17:21,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:21,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:21,356 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:21,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:21,567 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:21,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:21,567 INFO L82 PathProgramCache]: Analyzing trace with hash 2129121325, now seen corresponding path program 10 times [2020-10-05 22:17:21,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:21,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403540117] [2020-10-05 22:17:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:21,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403540117] [2020-10-05 22:17:21,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195757403] [2020-10-05 22:17:21,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:21,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:21,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:21,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:21,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:21,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:21,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:21,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:21,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16474017] [2020-10-05 22:17:21,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:21,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:21,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:21,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:21,792 INFO L87 Difference]: Start difference. First operand 99 states and 243 transitions. Second operand 11 states. [2020-10-05 22:17:21,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:21,869 INFO L93 Difference]: Finished difference Result 123 states and 287 transitions. [2020-10-05 22:17:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:21,870 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:21,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:21,871 INFO L225 Difference]: With dead ends: 123 [2020-10-05 22:17:21,871 INFO L226 Difference]: Without dead ends: 121 [2020-10-05 22:17:21,871 INFO L675 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 [2020-10-05 22:17:21,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-05 22:17:21,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 103. [2020-10-05 22:17:21,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-05 22:17:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 249 transitions. [2020-10-05 22:17:21,876 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 249 transitions. Word has length 11 [2020-10-05 22:17:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:21,876 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 249 transitions. [2020-10-05 22:17:21,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:21,876 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 249 transitions. [2020-10-05 22:17:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:21,877 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:21,877 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:22,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-05 22:17:22,078 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:22,079 INFO L82 PathProgramCache]: Analyzing trace with hash 2129143645, now seen corresponding path program 11 times [2020-10-05 22:17:22,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:22,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167963323] [2020-10-05 22:17:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:22,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:22,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167963323] [2020-10-05 22:17:22,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868212026] [2020-10-05 22:17:22,142 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:22,199 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:22,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:22,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:22,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:22,268 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:22,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:22,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:22,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:22,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577407391] [2020-10-05 22:17:22,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:22,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:22,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:22,314 INFO L87 Difference]: Start difference. First operand 103 states and 249 transitions. Second operand 11 states. [2020-10-05 22:17:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:22,492 INFO L93 Difference]: Finished difference Result 133 states and 314 transitions. [2020-10-05 22:17:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:22,492 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:22,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:22,493 INFO L225 Difference]: With dead ends: 133 [2020-10-05 22:17:22,493 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 22:17:22,494 INFO L675 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 [2020-10-05 22:17:22,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 22:17:22,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 102. [2020-10-05 22:17:22,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-05 22:17:22,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 247 transitions. [2020-10-05 22:17:22,498 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 247 transitions. Word has length 11 [2020-10-05 22:17:22,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:22,498 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 247 transitions. [2020-10-05 22:17:22,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:22,498 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 247 transitions. [2020-10-05 22:17:22,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:22,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:22,499 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:22,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:22,707 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:22,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:22,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2129151116, now seen corresponding path program 12 times [2020-10-05 22:17:22,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:22,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905507607] [2020-10-05 22:17:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:22,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905507607] [2020-10-05 22:17:22,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189331692] [2020-10-05 22:17:22,770 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:22,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:22,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:22,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:22,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:22,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:22,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:22,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265197097] [2020-10-05 22:17:22,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:22,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:22,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:22,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:22,893 INFO L87 Difference]: Start difference. First operand 102 states and 247 transitions. Second operand 11 states. [2020-10-05 22:17:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:23,006 INFO L93 Difference]: Finished difference Result 127 states and 298 transitions. [2020-10-05 22:17:23,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:23,006 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:23,007 INFO L225 Difference]: With dead ends: 127 [2020-10-05 22:17:23,007 INFO L226 Difference]: Without dead ends: 125 [2020-10-05 22:17:23,008 INFO L675 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 [2020-10-05 22:17:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-05 22:17:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 104. [2020-10-05 22:17:23,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 22:17:23,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-05 22:17:23,011 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-05 22:17:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:23,011 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-05 22:17:23,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-05 22:17:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:23,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:23,012 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:23,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-05 22:17:23,213 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:23,214 INFO L82 PathProgramCache]: Analyzing trace with hash 2129172475, now seen corresponding path program 13 times [2020-10-05 22:17:23,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:23,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396040558] [2020-10-05 22:17:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:23,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396040558] [2020-10-05 22:17:23,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117848102] [2020-10-05 22:17:23,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:23,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:23,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:23,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:23,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:23,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:23,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:23,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104652783] [2020-10-05 22:17:23,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:23,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:23,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:23,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:23,364 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-05 22:17:23,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:23,571 INFO L93 Difference]: Finished difference Result 141 states and 334 transitions. [2020-10-05 22:17:23,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:17:23,571 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:23,572 INFO L225 Difference]: With dead ends: 141 [2020-10-05 22:17:23,572 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 22:17:23,573 INFO L675 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 [2020-10-05 22:17:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 22:17:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 104. [2020-10-05 22:17:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 22:17:23,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 254 transitions. [2020-10-05 22:17:23,577 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 254 transitions. Word has length 11 [2020-10-05 22:17:23,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:23,577 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 254 transitions. [2020-10-05 22:17:23,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:23,577 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 254 transitions. [2020-10-05 22:17:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:23,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:23,578 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:23,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-05 22:17:23,779 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:23,779 INFO L82 PathProgramCache]: Analyzing trace with hash 2129173436, now seen corresponding path program 14 times [2020-10-05 22:17:23,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:23,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602345287] [2020-10-05 22:17:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:23,890 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:23,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602345287] [2020-10-05 22:17:23,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640336231] [2020-10-05 22:17:23,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:23,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:23,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:23,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:23,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:24,007 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:24,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:24,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:24,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:24,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139201989] [2020-10-05 22:17:24,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:24,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:24,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:24,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:24,018 INFO L87 Difference]: Start difference. First operand 104 states and 254 transitions. Second operand 11 states. [2020-10-05 22:17:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:24,176 INFO L93 Difference]: Finished difference Result 136 states and 319 transitions. [2020-10-05 22:17:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:24,176 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:24,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:24,177 INFO L225 Difference]: With dead ends: 136 [2020-10-05 22:17:24,177 INFO L226 Difference]: Without dead ends: 131 [2020-10-05 22:17:24,178 INFO L675 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 [2020-10-05 22:17:24,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-05 22:17:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 101. [2020-10-05 22:17:24,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 22:17:24,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 245 transitions. [2020-10-05 22:17:24,182 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 245 transitions. Word has length 11 [2020-10-05 22:17:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:24,184 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 245 transitions. [2020-10-05 22:17:24,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 245 transitions. [2020-10-05 22:17:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:24,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:24,185 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:24,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-05 22:17:24,395 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:24,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:24,395 INFO L82 PathProgramCache]: Analyzing trace with hash 2129381756, now seen corresponding path program 15 times [2020-10-05 22:17:24,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:24,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247422367] [2020-10-05 22:17:24,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:24,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247422367] [2020-10-05 22:17:24,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340248981] [2020-10-05 22:17:24,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:24,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:24,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:24,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:24,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:24,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:24,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:24,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200963692] [2020-10-05 22:17:24,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:24,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:24,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:24,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:24,563 INFO L87 Difference]: Start difference. First operand 101 states and 245 transitions. Second operand 11 states. [2020-10-05 22:17:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:24,653 INFO L93 Difference]: Finished difference Result 130 states and 301 transitions. [2020-10-05 22:17:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:24,653 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:24,655 INFO L225 Difference]: With dead ends: 130 [2020-10-05 22:17:24,655 INFO L226 Difference]: Without dead ends: 128 [2020-10-05 22:17:24,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-10-05 22:17:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-05 22:17:24,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 99. [2020-10-05 22:17:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 22:17:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-05 22:17:24,660 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-05 22:17:24,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:24,661 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-05 22:17:24,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:24,661 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-05 22:17:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:24,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:24,662 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:24,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-05 22:17:24,874 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:24,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:24,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2130044846, now seen corresponding path program 16 times [2020-10-05 22:17:24,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:24,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887695809] [2020-10-05 22:17:24,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:24,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:24,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887695809] [2020-10-05 22:17:24,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798095157] [2020-10-05 22:17:24,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:24,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:24,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:24,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:24,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:25,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:25,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:25,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716127605] [2020-10-05 22:17:25,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:25,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:25,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:25,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:25,047 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-05 22:17:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:25,170 INFO L93 Difference]: Finished difference Result 131 states and 303 transitions. [2020-10-05 22:17:25,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:25,170 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:25,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:25,171 INFO L225 Difference]: With dead ends: 131 [2020-10-05 22:17:25,171 INFO L226 Difference]: Without dead ends: 129 [2020-10-05 22:17:25,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:17:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-05 22:17:25,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 101. [2020-10-05 22:17:25,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 22:17:25,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-05 22:17:25,175 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-05 22:17:25,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:25,176 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-05 22:17:25,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:25,176 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-05 22:17:25,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:25,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:25,177 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:25,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-05 22:17:25,386 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:25,386 INFO L82 PathProgramCache]: Analyzing trace with hash 2130066205, now seen corresponding path program 17 times [2020-10-05 22:17:25,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:25,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633234063] [2020-10-05 22:17:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:25,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633234063] [2020-10-05 22:17:25,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568233210] [2020-10-05 22:17:25,431 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:25,468 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:25,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:25,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:25,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:25,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:25,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:25,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:25,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:25,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441525469] [2020-10-05 22:17:25,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:25,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:25,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:25,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:25,534 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-05 22:17:25,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:25,661 INFO L93 Difference]: Finished difference Result 131 states and 311 transitions. [2020-10-05 22:17:25,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:25,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:25,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:25,662 INFO L225 Difference]: With dead ends: 131 [2020-10-05 22:17:25,662 INFO L226 Difference]: Without dead ends: 126 [2020-10-05 22:17:25,663 INFO L675 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 [2020-10-05 22:17:25,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-05 22:17:25,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 101. [2020-10-05 22:17:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-05 22:17:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 247 transitions. [2020-10-05 22:17:25,667 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 247 transitions. Word has length 11 [2020-10-05 22:17:25,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:25,668 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 247 transitions. [2020-10-05 22:17:25,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 247 transitions. [2020-10-05 22:17:25,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:25,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:25,669 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:25,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:25,879 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:25,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:25,879 INFO L82 PathProgramCache]: Analyzing trace with hash 2130067166, now seen corresponding path program 18 times [2020-10-05 22:17:25,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:25,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189868766] [2020-10-05 22:17:25,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:25,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189868766] [2020-10-05 22:17:25,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380410681] [2020-10-05 22:17:25,931 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:25,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:25,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:25,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:25,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:26,017 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:26,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:26,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:26,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:26,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827464890] [2020-10-05 22:17:26,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:26,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:26,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:26,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:26,024 INFO L87 Difference]: Start difference. First operand 101 states and 247 transitions. Second operand 11 states. [2020-10-05 22:17:26,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:26,258 INFO L93 Difference]: Finished difference Result 145 states and 339 transitions. [2020-10-05 22:17:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:17:26,258 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:26,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:26,259 INFO L225 Difference]: With dead ends: 145 [2020-10-05 22:17:26,259 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 22:17:26,260 INFO L675 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 [2020-10-05 22:17:26,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 22:17:26,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 99. [2020-10-05 22:17:26,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-05 22:17:26,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 240 transitions. [2020-10-05 22:17:26,264 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 240 transitions. Word has length 11 [2020-10-05 22:17:26,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:26,264 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 240 transitions. [2020-10-05 22:17:26,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:26,264 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 240 transitions. [2020-10-05 22:17:26,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:26,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:26,265 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:26,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-05 22:17:26,474 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:26,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:26,474 INFO L82 PathProgramCache]: Analyzing trace with hash 2130095996, now seen corresponding path program 19 times [2020-10-05 22:17:26,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:26,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359747384] [2020-10-05 22:17:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:26,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359747384] [2020-10-05 22:17:26,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896961237] [2020-10-05 22:17:26,524 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:26,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 22:17:26,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:26,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:26,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:26,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:26,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-10-05 22:17:26,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303562247] [2020-10-05 22:17:26,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 22:17:26,641 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:26,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 22:17:26,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-05 22:17:26,642 INFO L87 Difference]: Start difference. First operand 99 states and 240 transitions. Second operand 11 states. [2020-10-05 22:17:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:26,794 INFO L93 Difference]: Finished difference Result 135 states and 315 transitions. [2020-10-05 22:17:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:26,794 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-10-05 22:17:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:26,795 INFO L225 Difference]: With dead ends: 135 [2020-10-05 22:17:26,796 INFO L226 Difference]: Without dead ends: 130 [2020-10-05 22:17:26,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:17:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-05 22:17:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2020-10-05 22:17:26,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-05 22:17:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 231 transitions. [2020-10-05 22:17:26,799 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 231 transitions. Word has length 11 [2020-10-05 22:17:26,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:26,800 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 231 transitions. [2020-10-05 22:17:26,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 22:17:26,800 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 231 transitions. [2020-10-05 22:17:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:26,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:26,800 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:27,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:27,009 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:27,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:27,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1822274800, now seen corresponding path program 4 times [2020-10-05 22:17:27,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:27,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181762643] [2020-10-05 22:17:27,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:27,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:27,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181762643] [2020-10-05 22:17:27,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057400008] [2020-10-05 22:17:27,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:27,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:27,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:27,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:27,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:27,193 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:27,219 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:27,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:27,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2020-10-05 22:17:27,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790107629] [2020-10-05 22:17:27,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-05 22:17:27,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:27,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-05 22:17:27,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-05 22:17:27,221 INFO L87 Difference]: Start difference. First operand 98 states and 231 transitions. Second operand 14 states. [2020-10-05 22:17:27,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:27,332 INFO L93 Difference]: Finished difference Result 143 states and 333 transitions. [2020-10-05 22:17:27,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:27,338 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2020-10-05 22:17:27,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:27,339 INFO L225 Difference]: With dead ends: 143 [2020-10-05 22:17:27,339 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 22:17:27,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2020-10-05 22:17:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 22:17:27,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2020-10-05 22:17:27,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-05 22:17:27,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 257 transitions. [2020-10-05 22:17:27,344 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 257 transitions. Word has length 11 [2020-10-05 22:17:27,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:27,344 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 257 transitions. [2020-10-05 22:17:27,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-05 22:17:27,344 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 257 transitions. [2020-10-05 22:17:27,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:27,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:27,345 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:27,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-05 22:17:27,556 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:27,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:27,557 INFO L82 PathProgramCache]: Analyzing trace with hash 62604888, now seen corresponding path program 10 times [2020-10-05 22:17:27,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:27,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367542737] [2020-10-05 22:17:27,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:27,655 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:27,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367542737] [2020-10-05 22:17:27,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15937176] [2020-10-05 22:17:27,656 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:27,698 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:27,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:27,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:27,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:27,796 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:27,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:27,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:27,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613124906] [2020-10-05 22:17:27,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:27,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:27,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:27,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:27,798 INFO L87 Difference]: Start difference. First operand 105 states and 257 transitions. Second operand 13 states. [2020-10-05 22:17:27,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:27,844 INFO L93 Difference]: Finished difference Result 132 states and 311 transitions. [2020-10-05 22:17:27,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:27,845 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:27,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:27,847 INFO L225 Difference]: With dead ends: 132 [2020-10-05 22:17:27,847 INFO L226 Difference]: Without dead ends: 129 [2020-10-05 22:17:27,847 INFO L675 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 [2020-10-05 22:17:27,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-05 22:17:27,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 110. [2020-10-05 22:17:27,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 22:17:27,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-05 22:17:27,851 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-05 22:17:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:27,851 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-05 22:17:27,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-05 22:17:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:27,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:27,852 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:28,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-05 22:17:28,064 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:28,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:28,064 INFO L82 PathProgramCache]: Analyzing trace with hash 727540008, now seen corresponding path program 11 times [2020-10-05 22:17:28,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:28,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679390808] [2020-10-05 22:17:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:28,143 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:28,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679390808] [2020-10-05 22:17:28,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955703499] [2020-10-05 22:17:28,144 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:28,183 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:28,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:28,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:28,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:28,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:28,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:28,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156015121] [2020-10-05 22:17:28,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:28,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:28,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:28,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:28,288 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-05 22:17:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:28,343 INFO L93 Difference]: Finished difference Result 143 states and 332 transitions. [2020-10-05 22:17:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:28,344 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:28,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:28,345 INFO L225 Difference]: With dead ends: 143 [2020-10-05 22:17:28,345 INFO L226 Difference]: Without dead ends: 140 [2020-10-05 22:17:28,345 INFO L675 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 [2020-10-05 22:17:28,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-05 22:17:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-10-05 22:17:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 22:17:28,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 268 transitions. [2020-10-05 22:17:28,349 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 268 transitions. Word has length 11 [2020-10-05 22:17:28,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:28,349 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 268 transitions. [2020-10-05 22:17:28,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:28,349 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 268 transitions. [2020-10-05 22:17:28,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:28,350 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:28,350 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:28,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-05 22:17:28,559 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:28,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:28,559 INFO L82 PathProgramCache]: Analyzing trace with hash 748989528, now seen corresponding path program 12 times [2020-10-05 22:17:28,560 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:28,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953958273] [2020-10-05 22:17:28,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:28,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953958273] [2020-10-05 22:17:28,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146977450] [2020-10-05 22:17:28,639 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:28,682 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:17:28,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:28,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:28,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:28,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:28,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:28,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946218316] [2020-10-05 22:17:28,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:28,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:28,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:28,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:28,771 INFO L87 Difference]: Start difference. First operand 110 states and 268 transitions. Second operand 13 states. [2020-10-05 22:17:28,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:28,842 INFO L93 Difference]: Finished difference Result 142 states and 332 transitions. [2020-10-05 22:17:28,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:28,842 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:28,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:28,844 INFO L225 Difference]: With dead ends: 142 [2020-10-05 22:17:28,844 INFO L226 Difference]: Without dead ends: 139 [2020-10-05 22:17:28,844 INFO L675 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 [2020-10-05 22:17:28,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-05 22:17:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-05 22:17:28,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-05 22:17:28,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2020-10-05 22:17:28,848 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 11 [2020-10-05 22:17:28,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:28,848 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2020-10-05 22:17:28,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:28,849 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2020-10-05 22:17:28,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:28,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:28,849 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:29,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-05 22:17:29,060 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:29,060 INFO L82 PathProgramCache]: Analyzing trace with hash 749681448, now seen corresponding path program 13 times [2020-10-05 22:17:29,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:29,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32040832] [2020-10-05 22:17:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:29,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:29,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32040832] [2020-10-05 22:17:29,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932295518] [2020-10-05 22:17:29,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:29,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:29,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:29,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:29,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:29,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199605088] [2020-10-05 22:17:29,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:29,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:29,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:29,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:29,246 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand 13 states. [2020-10-05 22:17:29,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:29,341 INFO L93 Difference]: Finished difference Result 141 states and 332 transitions. [2020-10-05 22:17:29,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:29,341 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:29,343 INFO L225 Difference]: With dead ends: 141 [2020-10-05 22:17:29,343 INFO L226 Difference]: Without dead ends: 138 [2020-10-05 22:17:29,343 INFO L675 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 [2020-10-05 22:17:29,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-05 22:17:29,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 114. [2020-10-05 22:17:29,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-05 22:17:29,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 282 transitions. [2020-10-05 22:17:29,347 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 282 transitions. Word has length 11 [2020-10-05 22:17:29,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:29,347 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 282 transitions. [2020-10-05 22:17:29,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 282 transitions. [2020-10-05 22:17:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 22:17:29,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:29,348 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:29,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-05 22:17:29,558 INFO L427 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:29,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:29,559 INFO L82 PathProgramCache]: Analyzing trace with hash 749703768, now seen corresponding path program 14 times [2020-10-05 22:17:29,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:29,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211079997] [2020-10-05 22:17:29,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:29,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211079997] [2020-10-05 22:17:29,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144430115] [2020-10-05 22:17:29,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:29,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:29,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:29,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:29,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:29,763 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:29,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:29,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:29,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:29,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602238926] [2020-10-05 22:17:29,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:29,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:29,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:29,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:29,781 INFO L87 Difference]: Start difference. First operand 114 states and 282 transitions. Second operand 13 states. [2020-10-05 22:17:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:29,923 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 22:17:29,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:29,928 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 11 [2020-10-05 22:17:29,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:29,929 INFO L225 Difference]: With dead ends: 150 [2020-10-05 22:17:29,930 INFO L226 Difference]: Without dead ends: 144 [2020-10-05 22:17:29,930 INFO L675 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 [2020-10-05 22:17:29,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-05 22:17:29,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 113. [2020-10-05 22:17:29,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-05 22:17:29,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 282 transitions. [2020-10-05 22:17:29,934 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 282 transitions. Word has length 11 [2020-10-05 22:17:29,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:29,935 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 282 transitions. [2020-10-05 22:17:29,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:29,935 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 282 transitions. [2020-10-05 22:17:29,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:29,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:29,935 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:30,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:30,146 INFO L427 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:30,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:30,146 INFO L82 PathProgramCache]: Analyzing trace with hash 920465749, now seen corresponding path program 20 times [2020-10-05 22:17:30,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:30,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965736784] [2020-10-05 22:17:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:30,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965736784] [2020-10-05 22:17:30,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194584223] [2020-10-05 22:17:30,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:30,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:30,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:30,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:30,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:30,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:30,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:30,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225744147] [2020-10-05 22:17:30,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:30,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:30,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:30,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:30,343 INFO L87 Difference]: Start difference. First operand 113 states and 282 transitions. Second operand 13 states. [2020-10-05 22:17:30,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:30,386 INFO L93 Difference]: Finished difference Result 138 states and 332 transitions. [2020-10-05 22:17:30,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:17:30,386 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:30,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:30,387 INFO L225 Difference]: With dead ends: 138 [2020-10-05 22:17:30,387 INFO L226 Difference]: Without dead ends: 136 [2020-10-05 22:17:30,388 INFO L675 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 [2020-10-05 22:17:30,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-10-05 22:17:30,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 117. [2020-10-05 22:17:30,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-05 22:17:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 294 transitions. [2020-10-05 22:17:30,391 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 294 transitions. Word has length 12 [2020-10-05 22:17:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:30,391 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 294 transitions. [2020-10-05 22:17:30,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:30,392 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 294 transitions. [2020-10-05 22:17:30,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:30,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:30,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:30,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-05 22:17:30,602 INFO L427 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:30,603 INFO L82 PathProgramCache]: Analyzing trace with hash 920466710, now seen corresponding path program 21 times [2020-10-05 22:17:30,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:30,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164638413] [2020-10-05 22:17:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:30,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:30,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164638413] [2020-10-05 22:17:30,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110815181] [2020-10-05 22:17:30,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:30,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:30,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:30,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:30,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:30,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:30,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:30,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525657038] [2020-10-05 22:17:30,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:30,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:30,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:30,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:30,839 INFO L87 Difference]: Start difference. First operand 117 states and 294 transitions. Second operand 13 states. [2020-10-05 22:17:30,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:30,957 INFO L93 Difference]: Finished difference Result 145 states and 346 transitions. [2020-10-05 22:17:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:30,958 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:30,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:30,959 INFO L225 Difference]: With dead ends: 145 [2020-10-05 22:17:30,959 INFO L226 Difference]: Without dead ends: 143 [2020-10-05 22:17:30,960 INFO L675 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 [2020-10-05 22:17:30,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-05 22:17:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 115. [2020-10-05 22:17:30,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-05 22:17:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 288 transitions. [2020-10-05 22:17:30,963 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 288 transitions. Word has length 12 [2020-10-05 22:17:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:30,963 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 288 transitions. [2020-10-05 22:17:30,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 288 transitions. [2020-10-05 22:17:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:30,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:30,964 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:31,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-05 22:17:31,165 INFO L427 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:31,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:31,165 INFO L82 PathProgramCache]: Analyzing trace with hash 920495540, now seen corresponding path program 22 times [2020-10-05 22:17:31,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:31,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897555254] [2020-10-05 22:17:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:31,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897555254] [2020-10-05 22:17:31,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687485113] [2020-10-05 22:17:31,230 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:31,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:31,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:31,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:31,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:31,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:31,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:31,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:31,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032391181] [2020-10-05 22:17:31,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:31,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:31,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:31,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:31,378 INFO L87 Difference]: Start difference. First operand 115 states and 288 transitions. Second operand 13 states. [2020-10-05 22:17:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:31,501 INFO L93 Difference]: Finished difference Result 150 states and 356 transitions. [2020-10-05 22:17:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:31,501 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:31,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:31,502 INFO L225 Difference]: With dead ends: 150 [2020-10-05 22:17:31,503 INFO L226 Difference]: Without dead ends: 148 [2020-10-05 22:17:31,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:17:31,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-05 22:17:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 116. [2020-10-05 22:17:31,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-05 22:17:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 289 transitions. [2020-10-05 22:17:31,506 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 289 transitions. Word has length 12 [2020-10-05 22:17:31,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:31,507 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 289 transitions. [2020-10-05 22:17:31,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:31,507 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 289 transitions. [2020-10-05 22:17:31,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:31,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:31,508 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:31,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:31,717 INFO L427 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:31,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:31,717 INFO L82 PathProgramCache]: Analyzing trace with hash 921389270, now seen corresponding path program 23 times [2020-10-05 22:17:31,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:31,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908143644] [2020-10-05 22:17:31,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:31,789 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:31,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908143644] [2020-10-05 22:17:31,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852639015] [2020-10-05 22:17:31,789 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:31,827 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:31,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:31,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:31,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:31,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:31,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:31,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628984213] [2020-10-05 22:17:31,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:31,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:31,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:31,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:31,928 INFO L87 Difference]: Start difference. First operand 116 states and 289 transitions. Second operand 13 states. [2020-10-05 22:17:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:32,033 INFO L93 Difference]: Finished difference Result 148 states and 352 transitions. [2020-10-05 22:17:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:32,034 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:32,035 INFO L225 Difference]: With dead ends: 148 [2020-10-05 22:17:32,035 INFO L226 Difference]: Without dead ends: 146 [2020-10-05 22:17:32,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:17:32,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-05 22:17:32,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 120. [2020-10-05 22:17:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:32,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-05 22:17:32,039 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-05 22:17:32,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:32,039 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-05 22:17:32,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:32,040 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-05 22:17:32,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:32,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:32,041 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:32,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-05 22:17:32,252 INFO L427 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash 921390231, now seen corresponding path program 24 times [2020-10-05 22:17:32,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:32,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832137432] [2020-10-05 22:17:32,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:32,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832137432] [2020-10-05 22:17:32,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386175760] [2020-10-05 22:17:32,318 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:32,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:32,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:32,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:32,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:32,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:32,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:32,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:32,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929914131] [2020-10-05 22:17:32,469 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:32,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:32,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:32,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:32,470 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-05 22:17:32,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:32,586 INFO L93 Difference]: Finished difference Result 149 states and 354 transitions. [2020-10-05 22:17:32,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:32,586 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:32,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:32,588 INFO L225 Difference]: With dead ends: 149 [2020-10-05 22:17:32,588 INFO L226 Difference]: Without dead ends: 147 [2020-10-05 22:17:32,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:17:32,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-05 22:17:32,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2020-10-05 22:17:32,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:32,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 293 transitions. [2020-10-05 22:17:32,593 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 293 transitions. Word has length 12 [2020-10-05 22:17:32,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:32,593 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 293 transitions. [2020-10-05 22:17:32,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 293 transitions. [2020-10-05 22:17:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:32,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:32,594 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:32,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:32,805 INFO L427 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:32,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1557695239, now seen corresponding path program 25 times [2020-10-05 22:17:32,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:32,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331305508] [2020-10-05 22:17:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:32,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:32,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331305508] [2020-10-05 22:17:32,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599036453] [2020-10-05 22:17:32,892 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:32,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:32,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:33,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:33,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:33,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172730130] [2020-10-05 22:17:33,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:33,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:33,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:33,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:33,032 INFO L87 Difference]: Start difference. First operand 118 states and 293 transitions. Second operand 13 states. [2020-10-05 22:17:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:33,110 INFO L93 Difference]: Finished difference Result 152 states and 360 transitions. [2020-10-05 22:17:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:33,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:33,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:33,113 INFO L225 Difference]: With dead ends: 152 [2020-10-05 22:17:33,113 INFO L226 Difference]: Without dead ends: 150 [2020-10-05 22:17:33,114 INFO L675 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 [2020-10-05 22:17:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-05 22:17:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 122. [2020-10-05 22:17:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 22:17:33,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 305 transitions. [2020-10-05 22:17:33,117 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 305 transitions. Word has length 12 [2020-10-05 22:17:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:33,117 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 305 transitions. [2020-10-05 22:17:33,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 305 transitions. [2020-10-05 22:17:33,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:33,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:33,118 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:33,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-10-05 22:17:33,319 INFO L427 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:33,319 INFO L82 PathProgramCache]: Analyzing trace with hash 1557696200, now seen corresponding path program 26 times [2020-10-05 22:17:33,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:33,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69525090] [2020-10-05 22:17:33,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:33,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:33,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69525090] [2020-10-05 22:17:33,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176664493] [2020-10-05 22:17:33,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:33,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:33,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:33,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:33,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:33,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:33,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:33,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062375335] [2020-10-05 22:17:33,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:33,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:33,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:33,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:33,552 INFO L87 Difference]: Start difference. First operand 122 states and 305 transitions. Second operand 13 states. [2020-10-05 22:17:33,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:33,684 INFO L93 Difference]: Finished difference Result 153 states and 361 transitions. [2020-10-05 22:17:33,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:33,685 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:33,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:33,687 INFO L225 Difference]: With dead ends: 153 [2020-10-05 22:17:33,687 INFO L226 Difference]: Without dead ends: 151 [2020-10-05 22:17:33,687 INFO L675 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 [2020-10-05 22:17:33,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-05 22:17:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 120. [2020-10-05 22:17:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:33,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 299 transitions. [2020-10-05 22:17:33,691 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 299 transitions. Word has length 12 [2020-10-05 22:17:33,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:33,692 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 299 transitions. [2020-10-05 22:17:33,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:33,692 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 299 transitions. [2020-10-05 22:17:33,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:33,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:33,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:33,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-10-05 22:17:33,904 INFO L427 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:33,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:33,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1557725030, now seen corresponding path program 27 times [2020-10-05 22:17:33,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:33,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706705192] [2020-10-05 22:17:33,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:33,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706705192] [2020-10-05 22:17:33,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145335181] [2020-10-05 22:17:33,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:34,001 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:34,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:34,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:34,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:34,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:34,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:34,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638931727] [2020-10-05 22:17:34,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:34,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:34,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:34,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:34,091 INFO L87 Difference]: Start difference. First operand 120 states and 299 transitions. Second operand 13 states. [2020-10-05 22:17:34,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:34,239 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 22:17:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:34,239 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:34,241 INFO L225 Difference]: With dead ends: 156 [2020-10-05 22:17:34,241 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 22:17:34,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-10-05 22:17:34,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 22:17:34,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 119. [2020-10-05 22:17:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-05 22:17:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 295 transitions. [2020-10-05 22:17:34,246 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 295 transitions. Word has length 12 [2020-10-05 22:17:34,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:34,246 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 295 transitions. [2020-10-05 22:17:34,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:34,246 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 295 transitions. [2020-10-05 22:17:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:34,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:34,247 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:34,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-10-05 22:17:34,453 INFO L427 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1578251029, now seen corresponding path program 28 times [2020-10-05 22:17:34,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:34,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240920604] [2020-10-05 22:17:34,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:34,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240920604] [2020-10-05 22:17:34,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932413609] [2020-10-05 22:17:34,531 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:34,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:34,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:34,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:34,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:34,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:34,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:34,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38286832] [2020-10-05 22:17:34,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:34,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:34,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:34,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:34,660 INFO L87 Difference]: Start difference. First operand 119 states and 295 transitions. Second operand 13 states. [2020-10-05 22:17:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:34,746 INFO L93 Difference]: Finished difference Result 148 states and 351 transitions. [2020-10-05 22:17:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:34,747 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:34,748 INFO L225 Difference]: With dead ends: 148 [2020-10-05 22:17:34,748 INFO L226 Difference]: Without dead ends: 146 [2020-10-05 22:17:34,749 INFO L675 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 [2020-10-05 22:17:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-05 22:17:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 121. [2020-10-05 22:17:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-05 22:17:34,753 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-05 22:17:34,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:34,753 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-05 22:17:34,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:34,754 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-05 22:17:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:34,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:34,754 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:34,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-10-05 22:17:34,966 INFO L427 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:34,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1578251990, now seen corresponding path program 29 times [2020-10-05 22:17:34,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:34,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082930704] [2020-10-05 22:17:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:35,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082930704] [2020-10-05 22:17:35,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068605882] [2020-10-05 22:17:35,030 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:35,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:35,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:35,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:35,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:35,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:35,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:35,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579038894] [2020-10-05 22:17:35,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:35,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:35,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:35,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:35,210 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-05 22:17:35,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:35,401 INFO L93 Difference]: Finished difference Result 157 states and 368 transitions. [2020-10-05 22:17:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:35,402 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:35,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:35,403 INFO L225 Difference]: With dead ends: 157 [2020-10-05 22:17:35,403 INFO L226 Difference]: Without dead ends: 155 [2020-10-05 22:17:35,404 INFO L675 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 [2020-10-05 22:17:35,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-05 22:17:35,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 120. [2020-10-05 22:17:35,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:35,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 297 transitions. [2020-10-05 22:17:35,409 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 297 transitions. Word has length 12 [2020-10-05 22:17:35,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:35,409 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 297 transitions. [2020-10-05 22:17:35,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 297 transitions. [2020-10-05 22:17:35,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:35,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:35,411 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:35,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:35,623 INFO L427 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:35,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:35,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1578914119, now seen corresponding path program 30 times [2020-10-05 22:17:35,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:35,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621772037] [2020-10-05 22:17:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:35,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621772037] [2020-10-05 22:17:35,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601214267] [2020-10-05 22:17:35,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:35,734 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:35,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:35,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:17:35,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:35,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:35,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-05 22:17:35,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804373587] [2020-10-05 22:17:35,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 22:17:35,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:35,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 22:17:35,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-05 22:17:35,772 INFO L87 Difference]: Start difference. First operand 120 states and 297 transitions. Second operand 9 states. [2020-10-05 22:17:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:35,851 INFO L93 Difference]: Finished difference Result 149 states and 350 transitions. [2020-10-05 22:17:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:35,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-05 22:17:35,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:35,853 INFO L225 Difference]: With dead ends: 149 [2020-10-05 22:17:35,853 INFO L226 Difference]: Without dead ends: 147 [2020-10-05 22:17:35,854 INFO L675 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 [2020-10-05 22:17:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-05 22:17:35,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 124. [2020-10-05 22:17:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 22:17:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 22:17:35,860 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 22:17:35,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:35,860 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 22:17:35,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 22:17:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 22:17:35,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:35,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:35,861 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:36,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2020-10-05 22:17:36,070 INFO L427 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:36,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:36,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1578936439, now seen corresponding path program 31 times [2020-10-05 22:17:36,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:36,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697898531] [2020-10-05 22:17:36,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:36,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:36,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697898531] [2020-10-05 22:17:36,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470269744] [2020-10-05 22:17:36,127 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:36,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:36,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:36,253 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:36,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:36,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:36,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:36,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93687672] [2020-10-05 22:17:36,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:36,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:36,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:36,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:36,288 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 22:17:36,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:36,532 INFO L93 Difference]: Finished difference Result 164 states and 389 transitions. [2020-10-05 22:17:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:36,532 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:36,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:36,534 INFO L225 Difference]: With dead ends: 164 [2020-10-05 22:17:36,534 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 22:17:36,534 INFO L675 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 [2020-10-05 22:17:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 22:17:36,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-05 22:17:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 22:17:36,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 296 transitions. [2020-10-05 22:17:36,538 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 296 transitions. Word has length 12 [2020-10-05 22:17:36,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:36,538 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 296 transitions. [2020-10-05 22:17:36,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:36,538 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 296 transitions. [2020-10-05 22:17:36,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:36,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:36,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:36,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2020-10-05 22:17:36,740 INFO L427 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:36,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:36,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1578943910, now seen corresponding path program 32 times [2020-10-05 22:17:36,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:36,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620290446] [2020-10-05 22:17:36,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:36,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620290446] [2020-10-05 22:17:36,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314647255] [2020-10-05 22:17:36,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:36,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:36,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:36,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:36,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:36,932 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:36,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:36,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:36,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553339530] [2020-10-05 22:17:36,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:36,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:36,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:36,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:36,934 INFO L87 Difference]: Start difference. First operand 122 states and 296 transitions. Second operand 13 states. [2020-10-05 22:17:37,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:37,119 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 22:17:37,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:37,120 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:37,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:37,121 INFO L225 Difference]: With dead ends: 156 [2020-10-05 22:17:37,121 INFO L226 Difference]: Without dead ends: 154 [2020-10-05 22:17:37,121 INFO L675 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 [2020-10-05 22:17:37,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-05 22:17:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 124. [2020-10-05 22:17:37,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 22:17:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 22:17:37,124 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 22:17:37,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:37,124 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 22:17:37,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:37,125 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 22:17:37,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:37,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:37,125 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:37,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:37,326 INFO L427 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:37,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1578965269, now seen corresponding path program 33 times [2020-10-05 22:17:37,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:37,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919956840] [2020-10-05 22:17:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:37,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919956840] [2020-10-05 22:17:37,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597861338] [2020-10-05 22:17:37,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:37,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:37,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:37,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:37,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:37,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:37,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:37,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:37,526 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:37,526 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647967317] [2020-10-05 22:17:37,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:37,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:37,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:37,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:37,527 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 22:17:37,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:37,868 INFO L93 Difference]: Finished difference Result 176 states and 416 transitions. [2020-10-05 22:17:37,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:17:37,868 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:37,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:37,870 INFO L225 Difference]: With dead ends: 176 [2020-10-05 22:17:37,870 INFO L226 Difference]: Without dead ends: 171 [2020-10-05 22:17:37,870 INFO L675 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 [2020-10-05 22:17:37,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-05 22:17:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 124. [2020-10-05 22:17:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-05 22:17:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 303 transitions. [2020-10-05 22:17:37,874 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 303 transitions. Word has length 12 [2020-10-05 22:17:37,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:37,875 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 303 transitions. [2020-10-05 22:17:37,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:37,875 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 303 transitions. [2020-10-05 22:17:37,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:37,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:37,876 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:38,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2020-10-05 22:17:38,086 INFO L427 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:38,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:38,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1578966230, now seen corresponding path program 34 times [2020-10-05 22:17:38,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:38,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299086897] [2020-10-05 22:17:38,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:38,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:38,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299086897] [2020-10-05 22:17:38,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508740699] [2020-10-05 22:17:38,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:17:38,190 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:38,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:38,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:38,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:38,301 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:38,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:38,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:38,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067056115] [2020-10-05 22:17:38,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:38,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:38,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:38,336 INFO L87 Difference]: Start difference. First operand 124 states and 303 transitions. Second operand 13 states. [2020-10-05 22:17:38,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:38,587 INFO L93 Difference]: Finished difference Result 166 states and 393 transitions. [2020-10-05 22:17:38,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:38,588 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:38,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:38,589 INFO L225 Difference]: With dead ends: 166 [2020-10-05 22:17:38,589 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:17:38,590 INFO L675 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 [2020-10-05 22:17:38,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:17:38,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 121. [2020-10-05 22:17:38,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 294 transitions. [2020-10-05 22:17:38,594 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 294 transitions. Word has length 12 [2020-10-05 22:17:38,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:38,594 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 294 transitions. [2020-10-05 22:17:38,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:38,594 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 294 transitions. [2020-10-05 22:17:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:38,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:38,595 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:38,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:38,803 INFO L427 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:38,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:38,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1579174550, now seen corresponding path program 35 times [2020-10-05 22:17:38,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:38,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751991256] [2020-10-05 22:17:38,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:38,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:38,854 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:38,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751991256] [2020-10-05 22:17:38,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559757623] [2020-10-05 22:17:38,855 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:38,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:38,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:38,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:38,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:38,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:38,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:38,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:38,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260229576] [2020-10-05 22:17:38,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:38,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:38,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:38,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:38,987 INFO L87 Difference]: Start difference. First operand 121 states and 294 transitions. Second operand 13 states. [2020-10-05 22:17:39,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:39,169 INFO L93 Difference]: Finished difference Result 163 states and 379 transitions. [2020-10-05 22:17:39,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:39,169 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:39,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:39,171 INFO L225 Difference]: With dead ends: 163 [2020-10-05 22:17:39,171 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:17:39,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-05 22:17:39,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:17:39,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 123. [2020-10-05 22:17:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-05 22:17:39,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 301 transitions. [2020-10-05 22:17:39,175 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 301 transitions. Word has length 12 [2020-10-05 22:17:39,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:39,175 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 301 transitions. [2020-10-05 22:17:39,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:39,176 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 301 transitions. [2020-10-05 22:17:39,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:39,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:39,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:39,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2020-10-05 22:17:39,388 INFO L427 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:39,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:39,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1579837640, now seen corresponding path program 36 times [2020-10-05 22:17:39,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:39,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047087340] [2020-10-05 22:17:39,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:39,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:39,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047087340] [2020-10-05 22:17:39,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603393338] [2020-10-05 22:17:39,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:39,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:39,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:39,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:39,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:39,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:39,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:39,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:39,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937928753] [2020-10-05 22:17:39,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:39,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:39,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:39,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:39,582 INFO L87 Difference]: Start difference. First operand 123 states and 301 transitions. Second operand 13 states. [2020-10-05 22:17:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:39,856 INFO L93 Difference]: Finished difference Result 170 states and 399 transitions. [2020-10-05 22:17:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:17:39,857 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:39,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:39,858 INFO L225 Difference]: With dead ends: 170 [2020-10-05 22:17:39,858 INFO L226 Difference]: Without dead ends: 168 [2020-10-05 22:17:39,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-05 22:17:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-05 22:17:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 125. [2020-10-05 22:17:39,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-05 22:17:39,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 308 transitions. [2020-10-05 22:17:39,862 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 308 transitions. Word has length 12 [2020-10-05 22:17:39,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:39,862 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 308 transitions. [2020-10-05 22:17:39,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:39,863 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 308 transitions. [2020-10-05 22:17:39,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:39,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:39,863 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:40,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:40,064 INFO L427 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1579858999, now seen corresponding path program 37 times [2020-10-05 22:17:40,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:40,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738629375] [2020-10-05 22:17:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:40,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:40,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738629375] [2020-10-05 22:17:40,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053487476] [2020-10-05 22:17:40,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:40,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:40,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:40,274 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:40,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:40,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:40,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6810480] [2020-10-05 22:17:40,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:40,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:40,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:40,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:40,284 INFO L87 Difference]: Start difference. First operand 125 states and 308 transitions. Second operand 13 states. [2020-10-05 22:17:40,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:40,670 INFO L93 Difference]: Finished difference Result 177 states and 424 transitions. [2020-10-05 22:17:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:17:40,671 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:40,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:40,672 INFO L225 Difference]: With dead ends: 177 [2020-10-05 22:17:40,673 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 22:17:40,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=216, Invalid=434, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:17:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 22:17:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 126. [2020-10-05 22:17:40,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-05 22:17:40,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 313 transitions. [2020-10-05 22:17:40,679 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 313 transitions. Word has length 12 [2020-10-05 22:17:40,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:40,679 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 313 transitions. [2020-10-05 22:17:40,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:40,680 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 313 transitions. [2020-10-05 22:17:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:40,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:40,681 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:40,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2020-10-05 22:17:40,894 INFO L427 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:40,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1579859960, now seen corresponding path program 38 times [2020-10-05 22:17:40,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:40,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726997034] [2020-10-05 22:17:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:40,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:40,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726997034] [2020-10-05 22:17:40,954 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414641651] [2020-10-05 22:17:40,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:40,995 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:40,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:40,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:40,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:41,085 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:41,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:41,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:41,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:41,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141190058] [2020-10-05 22:17:41,094 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:41,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:41,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:41,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:41,094 INFO L87 Difference]: Start difference. First operand 126 states and 313 transitions. Second operand 13 states. [2020-10-05 22:17:41,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:41,443 INFO L93 Difference]: Finished difference Result 190 states and 454 transitions. [2020-10-05 22:17:41,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:17:41,444 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:41,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:41,445 INFO L225 Difference]: With dead ends: 190 [2020-10-05 22:17:41,445 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 22:17:41,446 INFO L675 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 [2020-10-05 22:17:41,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 22:17:41,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 121. [2020-10-05 22:17:41,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 297 transitions. [2020-10-05 22:17:41,450 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 297 transitions. Word has length 12 [2020-10-05 22:17:41,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:41,450 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 297 transitions. [2020-10-05 22:17:41,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:41,450 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 297 transitions. [2020-10-05 22:17:41,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:41,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:41,451 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:41,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2020-10-05 22:17:41,661 INFO L427 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:41,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:41,661 INFO L82 PathProgramCache]: Analyzing trace with hash 1579888790, now seen corresponding path program 39 times [2020-10-05 22:17:41,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:41,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10969350] [2020-10-05 22:17:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:41,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10969350] [2020-10-05 22:17:41,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519423039] [2020-10-05 22:17:41,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:41,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:17:41,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:41,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:41,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:41,833 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:41,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:41,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:41,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:41,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993631353] [2020-10-05 22:17:41,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:41,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:41,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:41,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:41,845 INFO L87 Difference]: Start difference. First operand 121 states and 297 transitions. Second operand 13 states. [2020-10-05 22:17:42,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:42,176 INFO L93 Difference]: Finished difference Result 180 states and 427 transitions. [2020-10-05 22:17:42,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:17:42,177 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:42,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:42,179 INFO L225 Difference]: With dead ends: 180 [2020-10-05 22:17:42,179 INFO L226 Difference]: Without dead ends: 175 [2020-10-05 22:17:42,179 INFO L675 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 [2020-10-05 22:17:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-05 22:17:42,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 120. [2020-10-05 22:17:42,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 292 transitions. [2020-10-05 22:17:42,183 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 292 transitions. Word has length 12 [2020-10-05 22:17:42,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:42,183 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 292 transitions. [2020-10-05 22:17:42,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:42,183 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 292 transitions. [2020-10-05 22:17:42,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:42,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:42,184 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:42,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2020-10-05 22:17:42,384 INFO L427 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:42,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1586324390, now seen corresponding path program 40 times [2020-10-05 22:17:42,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:42,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592837789] [2020-10-05 22:17:42,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:42,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592837789] [2020-10-05 22:17:42,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350116679] [2020-10-05 22:17:42,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:42,493 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:42,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:42,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:42,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:42,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:42,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:42,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:42,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9672277] [2020-10-05 22:17:42,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:42,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:42,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:42,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:42,593 INFO L87 Difference]: Start difference. First operand 120 states and 292 transitions. Second operand 13 states. [2020-10-05 22:17:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:42,734 INFO L93 Difference]: Finished difference Result 164 states and 379 transitions. [2020-10-05 22:17:42,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:42,735 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:42,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:42,737 INFO L225 Difference]: With dead ends: 164 [2020-10-05 22:17:42,737 INFO L226 Difference]: Without dead ends: 162 [2020-10-05 22:17:42,737 INFO L675 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 [2020-10-05 22:17:42,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-05 22:17:42,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 121. [2020-10-05 22:17:42,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:42,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 295 transitions. [2020-10-05 22:17:42,741 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 295 transitions. Word has length 12 [2020-10-05 22:17:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:42,741 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 295 transitions. [2020-10-05 22:17:42,741 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 295 transitions. [2020-10-05 22:17:42,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:42,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:42,742 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:42,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2020-10-05 22:17:42,943 INFO L427 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:42,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:42,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1586325351, now seen corresponding path program 41 times [2020-10-05 22:17:42,944 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:42,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431985957] [2020-10-05 22:17:42,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:43,006 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:43,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431985957] [2020-10-05 22:17:43,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310957802] [2020-10-05 22:17:43,007 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:17:43,047 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:43,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:43,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:43,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:43,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:43,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:43,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345076622] [2020-10-05 22:17:43,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:43,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:43,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:43,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:43,135 INFO L87 Difference]: Start difference. First operand 121 states and 295 transitions. Second operand 13 states. [2020-10-05 22:17:43,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:43,280 INFO L93 Difference]: Finished difference Result 161 states and 372 transitions. [2020-10-05 22:17:43,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:43,280 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:43,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:43,281 INFO L225 Difference]: With dead ends: 161 [2020-10-05 22:17:43,281 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 22:17:43,281 INFO L675 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 [2020-10-05 22:17:43,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 22:17:43,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 118. [2020-10-05 22:17:43,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 287 transitions. [2020-10-05 22:17:43,285 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 287 transitions. Word has length 12 [2020-10-05 22:17:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:43,285 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 287 transitions. [2020-10-05 22:17:43,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 287 transitions. [2020-10-05 22:17:43,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:43,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:43,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:43,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2020-10-05 22:17:43,495 INFO L427 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:43,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:43,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1606880180, now seen corresponding path program 42 times [2020-10-05 22:17:43,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:43,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675796503] [2020-10-05 22:17:43,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:43,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:43,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675796503] [2020-10-05 22:17:43,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846512277] [2020-10-05 22:17:43,572 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:43,610 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:17:43,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:43,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:43,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:43,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:43,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:43,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703195795] [2020-10-05 22:17:43,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:43,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:43,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:43,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:43,701 INFO L87 Difference]: Start difference. First operand 118 states and 287 transitions. Second operand 13 states. [2020-10-05 22:17:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:43,884 INFO L93 Difference]: Finished difference Result 165 states and 380 transitions. [2020-10-05 22:17:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:17:43,885 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:43,886 INFO L225 Difference]: With dead ends: 165 [2020-10-05 22:17:43,887 INFO L226 Difference]: Without dead ends: 163 [2020-10-05 22:17:43,887 INFO L675 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 [2020-10-05 22:17:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-05 22:17:43,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 118. [2020-10-05 22:17:43,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:43,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 290 transitions. [2020-10-05 22:17:43,890 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 290 transitions. Word has length 12 [2020-10-05 22:17:43,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:43,890 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 290 transitions. [2020-10-05 22:17:43,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:43,890 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 290 transitions. [2020-10-05 22:17:43,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:43,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:43,891 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:44,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2020-10-05 22:17:44,093 INFO L427 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:44,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:44,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1606881141, now seen corresponding path program 43 times [2020-10-05 22:17:44,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:44,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153193973] [2020-10-05 22:17:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:44,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:44,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153193973] [2020-10-05 22:17:44,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746278169] [2020-10-05 22:17:44,149 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:44,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:44,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:44,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:44,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:44,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:44,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287164304] [2020-10-05 22:17:44,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:44,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:44,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:44,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:44,281 INFO L87 Difference]: Start difference. First operand 118 states and 290 transitions. Second operand 13 states. [2020-10-05 22:17:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:44,471 INFO L93 Difference]: Finished difference Result 167 states and 384 transitions. [2020-10-05 22:17:44,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:17:44,471 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:44,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:44,473 INFO L225 Difference]: With dead ends: 167 [2020-10-05 22:17:44,473 INFO L226 Difference]: Without dead ends: 165 [2020-10-05 22:17:44,473 INFO L675 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 [2020-10-05 22:17:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-05 22:17:44,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 118. [2020-10-05 22:17:44,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-05 22:17:44,476 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-05 22:17:44,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:44,476 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-05 22:17:44,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-05 22:17:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:44,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:44,477 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:44,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:44,684 INFO L427 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:44,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1607543270, now seen corresponding path program 44 times [2020-10-05 22:17:44,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:44,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170098609] [2020-10-05 22:17:44,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:44,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170098609] [2020-10-05 22:17:44,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241038385] [2020-10-05 22:17:44,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:44,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:44,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:44,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:44,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:44,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:44,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:44,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:44,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682696417] [2020-10-05 22:17:44,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:44,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:44,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:44,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:44,908 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-05 22:17:45,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:45,156 INFO L93 Difference]: Finished difference Result 168 states and 392 transitions. [2020-10-05 22:17:45,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:17:45,156 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:45,158 INFO L225 Difference]: With dead ends: 168 [2020-10-05 22:17:45,158 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 22:17:45,158 INFO L675 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 [2020-10-05 22:17:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 22:17:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 120. [2020-10-05 22:17:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-05 22:17:45,161 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-05 22:17:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:45,162 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-05 22:17:45,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:45,162 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-05 22:17:45,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:45,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:45,163 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:45,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:45,370 INFO L427 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:45,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:45,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1607564629, now seen corresponding path program 45 times [2020-10-05 22:17:45,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:45,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649811583] [2020-10-05 22:17:45,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:45,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649811583] [2020-10-05 22:17:45,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498996271] [2020-10-05 22:17:45,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:45,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:45,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:45,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:45,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:45,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:45,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:45,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:45,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:45,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229004703] [2020-10-05 22:17:45,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:45,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:45,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:45,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:45,543 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-05 22:17:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:45,729 INFO L93 Difference]: Finished difference Result 160 states and 384 transitions. [2020-10-05 22:17:45,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:45,729 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:45,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:45,731 INFO L225 Difference]: With dead ends: 160 [2020-10-05 22:17:45,731 INFO L226 Difference]: Without dead ends: 155 [2020-10-05 22:17:45,731 INFO L675 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 [2020-10-05 22:17:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-05 22:17:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 121. [2020-10-05 22:17:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-05 22:17:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 301 transitions. [2020-10-05 22:17:45,735 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 301 transitions. Word has length 12 [2020-10-05 22:17:45,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:45,735 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 301 transitions. [2020-10-05 22:17:45,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 301 transitions. [2020-10-05 22:17:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:45,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:45,736 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:45,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:45,947 INFO L427 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:45,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:45,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1607565590, now seen corresponding path program 46 times [2020-10-05 22:17:45,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:45,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321104302] [2020-10-05 22:17:45,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:46,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:46,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321104302] [2020-10-05 22:17:46,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687439952] [2020-10-05 22:17:46,004 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:46,040 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:46,041 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:46,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:46,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:46,124 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:46,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:46,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:46,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21753738] [2020-10-05 22:17:46,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:46,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:46,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:46,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:46,159 INFO L87 Difference]: Start difference. First operand 121 states and 301 transitions. Second operand 13 states. [2020-10-05 22:17:46,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:46,486 INFO L93 Difference]: Finished difference Result 189 states and 444 transitions. [2020-10-05 22:17:46,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:17:46,487 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:46,488 INFO L225 Difference]: With dead ends: 189 [2020-10-05 22:17:46,489 INFO L226 Difference]: Without dead ends: 181 [2020-10-05 22:17:46,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:17:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-05 22:17:46,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 118. [2020-10-05 22:17:46,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-05 22:17:46,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 289 transitions. [2020-10-05 22:17:46,493 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 289 transitions. Word has length 12 [2020-10-05 22:17:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:46,493 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 289 transitions. [2020-10-05 22:17:46,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 289 transitions. [2020-10-05 22:17:46,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:46,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:46,494 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:46,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:46,695 INFO L427 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:46,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:46,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1607573061, now seen corresponding path program 47 times [2020-10-05 22:17:46,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:46,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20796902] [2020-10-05 22:17:46,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:46,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:46,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20796902] [2020-10-05 22:17:46,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777917030] [2020-10-05 22:17:46,749 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:46,789 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:46,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:46,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:46,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:46,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:46,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:46,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739880067] [2020-10-05 22:17:46,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:46,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:46,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:46,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:46,874 INFO L87 Difference]: Start difference. First operand 118 states and 289 transitions. Second operand 13 states. [2020-10-05 22:17:47,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:47,116 INFO L93 Difference]: Finished difference Result 169 states and 393 transitions. [2020-10-05 22:17:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:17:47,117 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:47,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:47,118 INFO L225 Difference]: With dead ends: 169 [2020-10-05 22:17:47,119 INFO L226 Difference]: Without dead ends: 167 [2020-10-05 22:17:47,119 INFO L675 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 [2020-10-05 22:17:47,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-05 22:17:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 120. [2020-10-05 22:17:47,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 22:17:47,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 296 transitions. [2020-10-05 22:17:47,122 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 296 transitions. Word has length 12 [2020-10-05 22:17:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:47,122 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 296 transitions. [2020-10-05 22:17:47,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 296 transitions. [2020-10-05 22:17:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:47,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:47,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:47,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2020-10-05 22:17:47,324 INFO L427 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:47,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:47,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1607594420, now seen corresponding path program 48 times [2020-10-05 22:17:47,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:47,325 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690477324] [2020-10-05 22:17:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:47,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:47,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690477324] [2020-10-05 22:17:47,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401935714] [2020-10-05 22:17:47,381 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:47,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:47,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:47,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:47,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:47,494 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:47,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:47,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:47,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:47,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829382821] [2020-10-05 22:17:47,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:47,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:47,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:47,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:47,504 INFO L87 Difference]: Start difference. First operand 120 states and 296 transitions. Second operand 13 states. [2020-10-05 22:17:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:47,829 INFO L93 Difference]: Finished difference Result 192 states and 454 transitions. [2020-10-05 22:17:47,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:17:47,830 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:47,832 INFO L225 Difference]: With dead ends: 192 [2020-10-05 22:17:47,832 INFO L226 Difference]: Without dead ends: 184 [2020-10-05 22:17:47,833 INFO L675 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 [2020-10-05 22:17:47,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-05 22:17:47,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 119. [2020-10-05 22:17:47,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-10-05 22:17:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 287 transitions. [2020-10-05 22:17:47,836 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 287 transitions. Word has length 12 [2020-10-05 22:17:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:47,836 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 287 transitions. [2020-10-05 22:17:47,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 287 transitions. [2020-10-05 22:17:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:47,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:47,837 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:48,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:48,037 INFO L427 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:48,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:48,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1607595381, now seen corresponding path program 49 times [2020-10-05 22:17:48,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:48,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847572750] [2020-10-05 22:17:48,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:48,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:48,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847572750] [2020-10-05 22:17:48,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782171714] [2020-10-05 22:17:48,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:48,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 22:17:48,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:48,195 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:48,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:48,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-10-05 22:17:48,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208175448] [2020-10-05 22:17:48,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 22:17:48,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:48,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 22:17:48,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-05 22:17:48,207 INFO L87 Difference]: Start difference. First operand 119 states and 287 transitions. Second operand 13 states. [2020-10-05 22:17:48,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:48,530 INFO L93 Difference]: Finished difference Result 180 states and 420 transitions. [2020-10-05 22:17:48,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:17:48,530 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2020-10-05 22:17:48,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:48,531 INFO L225 Difference]: With dead ends: 180 [2020-10-05 22:17:48,531 INFO L226 Difference]: Without dead ends: 175 [2020-10-05 22:17:48,531 INFO L675 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 [2020-10-05 22:17:48,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-05 22:17:48,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 114. [2020-10-05 22:17:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-05 22:17:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 268 transitions. [2020-10-05 22:17:48,534 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 268 transitions. Word has length 12 [2020-10-05 22:17:48,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:48,534 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 268 transitions. [2020-10-05 22:17:48,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 22:17:48,535 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 268 transitions. [2020-10-05 22:17:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:48,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:48,536 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:48,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2020-10-05 22:17:48,739 INFO L427 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:48,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:48,739 INFO L82 PathProgramCache]: Analyzing trace with hash -655922238, now seen corresponding path program 5 times [2020-10-05 22:17:48,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:48,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433663952] [2020-10-05 22:17:48,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:48,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433663952] [2020-10-05 22:17:48,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797497215] [2020-10-05 22:17:48,818 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:48,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:48,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:48,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:48,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:48,961 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:17:48,985 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:48,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:48,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 22:17:48,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205145558] [2020-10-05 22:17:48,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 22:17:48,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:48,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 22:17:48,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:17:48,987 INFO L87 Difference]: Start difference. First operand 114 states and 268 transitions. Second operand 16 states. [2020-10-05 22:17:49,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:49,132 INFO L93 Difference]: Finished difference Result 164 states and 382 transitions. [2020-10-05 22:17:49,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:17:49,133 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 12 [2020-10-05 22:17:49,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:49,134 INFO L225 Difference]: With dead ends: 164 [2020-10-05 22:17:49,134 INFO L226 Difference]: Without dead ends: 159 [2020-10-05 22:17:49,134 INFO L675 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 [2020-10-05 22:17:49,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-05 22:17:49,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 122. [2020-10-05 22:17:49,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-05 22:17:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 299 transitions. [2020-10-05 22:17:49,137 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 299 transitions. Word has length 12 [2020-10-05 22:17:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:49,137 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 299 transitions. [2020-10-05 22:17:49,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 22:17:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 299 transitions. [2020-10-05 22:17:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:49,137 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:49,138 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:49,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:49,341 INFO L427 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:49,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:49,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1940751883, now seen corresponding path program 15 times [2020-10-05 22:17:49,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:49,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363199479] [2020-10-05 22:17:49,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:49,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363199479] [2020-10-05 22:17:49,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550209754] [2020-10-05 22:17:49,452 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:49,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:17:49,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:49,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:49,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:49,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:49,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:49,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451404035] [2020-10-05 22:17:49,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:49,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:49,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:49,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:49,636 INFO L87 Difference]: Start difference. First operand 122 states and 299 transitions. Second operand 15 states. [2020-10-05 22:17:49,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:49,687 INFO L93 Difference]: Finished difference Result 156 states and 367 transitions. [2020-10-05 22:17:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:49,687 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:49,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:49,689 INFO L225 Difference]: With dead ends: 156 [2020-10-05 22:17:49,689 INFO L226 Difference]: Without dead ends: 153 [2020-10-05 22:17:49,689 INFO L675 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 [2020-10-05 22:17:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-05 22:17:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 129. [2020-10-05 22:17:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-05 22:17:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-05 22:17:49,693 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-05 22:17:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:49,693 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-05 22:17:49,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-05 22:17:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:49,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:49,694 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:49,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2020-10-05 22:17:49,904 INFO L427 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:49,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:49,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1078904123, now seen corresponding path program 16 times [2020-10-05 22:17:49,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:49,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909682605] [2020-10-05 22:17:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:50,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909682605] [2020-10-05 22:17:50,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280088697] [2020-10-05 22:17:50,012 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:50,049 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:50,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:50,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:50,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:50,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:50,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:50,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49860267] [2020-10-05 22:17:50,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:50,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:50,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:50,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:50,165 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-05 22:17:50,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:50,230 INFO L93 Difference]: Finished difference Result 170 states and 394 transitions. [2020-10-05 22:17:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:50,231 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:50,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:50,233 INFO L225 Difference]: With dead ends: 170 [2020-10-05 22:17:50,233 INFO L226 Difference]: Without dead ends: 167 [2020-10-05 22:17:50,233 INFO L675 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 [2020-10-05 22:17:50,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-05 22:17:50,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 129. [2020-10-05 22:17:50,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-05 22:17:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 315 transitions. [2020-10-05 22:17:50,235 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 315 transitions. Word has length 12 [2020-10-05 22:17:50,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:50,236 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 315 transitions. [2020-10-05 22:17:50,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 315 transitions. [2020-10-05 22:17:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:50,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:50,237 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:50,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:50,440 INFO L427 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:50,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:50,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1743839243, now seen corresponding path program 17 times [2020-10-05 22:17:50,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:50,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880673644] [2020-10-05 22:17:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:50,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:50,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880673644] [2020-10-05 22:17:50,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918467490] [2020-10-05 22:17:50,530 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:50,589 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:50,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:50,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:50,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:50,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:50,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:50,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:50,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490271571] [2020-10-05 22:17:50,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:50,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:50,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:50,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:50,718 INFO L87 Difference]: Start difference. First operand 129 states and 315 transitions. Second operand 15 states. [2020-10-05 22:17:50,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:50,796 INFO L93 Difference]: Finished difference Result 169 states and 394 transitions. [2020-10-05 22:17:50,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:50,796 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:50,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:50,797 INFO L225 Difference]: With dead ends: 169 [2020-10-05 22:17:50,797 INFO L226 Difference]: Without dead ends: 166 [2020-10-05 22:17:50,798 INFO L675 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 [2020-10-05 22:17:50,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-05 22:17:50,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 130. [2020-10-05 22:17:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 22:17:50,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 320 transitions. [2020-10-05 22:17:50,801 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 320 transitions. Word has length 12 [2020-10-05 22:17:50,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:50,801 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 320 transitions. [2020-10-05 22:17:50,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:50,801 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 320 transitions. [2020-10-05 22:17:50,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:50,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:50,802 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:51,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:51,011 INFO L427 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:51,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:51,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1765288763, now seen corresponding path program 18 times [2020-10-05 22:17:51,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:51,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62702627] [2020-10-05 22:17:51,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:51,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62702627] [2020-10-05 22:17:51,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145291024] [2020-10-05 22:17:51,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:51,130 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:17:51,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:51,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:51,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:51,241 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:51,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:51,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:51,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680832855] [2020-10-05 22:17:51,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:51,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:51,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:51,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:51,243 INFO L87 Difference]: Start difference. First operand 130 states and 320 transitions. Second operand 15 states. [2020-10-05 22:17:51,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:51,346 INFO L93 Difference]: Finished difference Result 168 states and 394 transitions. [2020-10-05 22:17:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:51,347 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:51,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:51,348 INFO L225 Difference]: With dead ends: 168 [2020-10-05 22:17:51,348 INFO L226 Difference]: Without dead ends: 165 [2020-10-05 22:17:51,348 INFO L675 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 [2020-10-05 22:17:51,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-05 22:17:51,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2020-10-05 22:17:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-05 22:17:51,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 327 transitions. [2020-10-05 22:17:51,358 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 327 transitions. Word has length 12 [2020-10-05 22:17:51,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:51,359 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 327 transitions. [2020-10-05 22:17:51,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:51,359 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 327 transitions. [2020-10-05 22:17:51,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:51,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:51,359 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:51,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2020-10-05 22:17:51,568 INFO L427 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:51,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:51,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1765980683, now seen corresponding path program 19 times [2020-10-05 22:17:51,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:51,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884500056] [2020-10-05 22:17:51,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:51,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884500056] [2020-10-05 22:17:51,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317850101] [2020-10-05 22:17:51,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:51,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:51,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:51,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:51,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:51,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970032977] [2020-10-05 22:17:51,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:51,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:51,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:51,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:51,869 INFO L87 Difference]: Start difference. First operand 132 states and 327 transitions. Second operand 15 states. [2020-10-05 22:17:52,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:52,025 INFO L93 Difference]: Finished difference Result 167 states and 394 transitions. [2020-10-05 22:17:52,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:52,026 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:52,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:52,028 INFO L225 Difference]: With dead ends: 167 [2020-10-05 22:17:52,028 INFO L226 Difference]: Without dead ends: 164 [2020-10-05 22:17:52,028 INFO L675 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 [2020-10-05 22:17:52,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-05 22:17:52,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 134. [2020-10-05 22:17:52,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 22:17:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 334 transitions. [2020-10-05 22:17:52,033 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 334 transitions. Word has length 12 [2020-10-05 22:17:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:52,034 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 334 transitions. [2020-10-05 22:17:52,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:52,034 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 334 transitions. [2020-10-05 22:17:52,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-05 22:17:52,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:52,035 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:52,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:52,246 INFO L427 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:52,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:52,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1766003003, now seen corresponding path program 20 times [2020-10-05 22:17:52,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:52,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736983517] [2020-10-05 22:17:52,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:52,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736983517] [2020-10-05 22:17:52,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808272251] [2020-10-05 22:17:52,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:52,353 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:52,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:52,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:52,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:52,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:17:52,473 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:52,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:52,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:52,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255051682] [2020-10-05 22:17:52,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:52,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:52,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:52,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:52,474 INFO L87 Difference]: Start difference. First operand 134 states and 334 transitions. Second operand 15 states. [2020-10-05 22:17:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:52,686 INFO L93 Difference]: Finished difference Result 176 states and 418 transitions. [2020-10-05 22:17:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:17:52,686 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 12 [2020-10-05 22:17:52,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:52,687 INFO L225 Difference]: With dead ends: 176 [2020-10-05 22:17:52,687 INFO L226 Difference]: Without dead ends: 170 [2020-10-05 22:17:52,688 INFO L675 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 [2020-10-05 22:17:52,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-05 22:17:52,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 132. [2020-10-05 22:17:52,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-05 22:17:52,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 332 transitions. [2020-10-05 22:17:52,692 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 332 transitions. Word has length 12 [2020-10-05 22:17:52,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:52,693 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 332 transitions. [2020-10-05 22:17:52,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:52,693 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 332 transitions. [2020-10-05 22:17:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:52,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:52,694 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:52,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:52,905 INFO L427 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:52,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:52,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1530333459, now seen corresponding path program 50 times [2020-10-05 22:17:52,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:52,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786192440] [2020-10-05 22:17:52,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:53,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786192440] [2020-10-05 22:17:53,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913679550] [2020-10-05 22:17:53,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:53,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:53,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:53,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:53,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:53,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:53,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:53,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:53,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262465352] [2020-10-05 22:17:53,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:53,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:53,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:53,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:53,274 INFO L87 Difference]: Start difference. First operand 132 states and 332 transitions. Second operand 15 states. [2020-10-05 22:17:53,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:53,347 INFO L93 Difference]: Finished difference Result 163 states and 394 transitions. [2020-10-05 22:17:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 22:17:53,348 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:53,350 INFO L225 Difference]: With dead ends: 163 [2020-10-05 22:17:53,350 INFO L226 Difference]: Without dead ends: 161 [2020-10-05 22:17:53,350 INFO L675 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 [2020-10-05 22:17:53,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-05 22:17:53,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 138. [2020-10-05 22:17:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 22:17:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 350 transitions. [2020-10-05 22:17:53,356 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 350 transitions. Word has length 13 [2020-10-05 22:17:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:53,356 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 350 transitions. [2020-10-05 22:17:53,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 350 transitions. [2020-10-05 22:17:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:53,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:53,357 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:53,570 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2020-10-05 22:17:53,570 INFO L427 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:53,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:53,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1530332498, now seen corresponding path program 51 times [2020-10-05 22:17:53,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:53,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113652238] [2020-10-05 22:17:53,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:53,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113652238] [2020-10-05 22:17:53,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765627259] [2020-10-05 22:17:53,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:53,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:17:53,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:53,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:53,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:53,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:53,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:53,816 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464788852] [2020-10-05 22:17:53,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:53,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:53,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:53,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:53,818 INFO L87 Difference]: Start difference. First operand 138 states and 350 transitions. Second operand 15 states. [2020-10-05 22:17:53,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:53,965 INFO L93 Difference]: Finished difference Result 172 states and 412 transitions. [2020-10-05 22:17:53,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:53,966 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:53,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:53,967 INFO L225 Difference]: With dead ends: 172 [2020-10-05 22:17:53,967 INFO L226 Difference]: Without dead ends: 170 [2020-10-05 22:17:53,968 INFO L675 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 [2020-10-05 22:17:53,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-05 22:17:53,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2020-10-05 22:17:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:17:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-05 22:17:53,971 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-05 22:17:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:53,971 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-05 22:17:53,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:53,971 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-05 22:17:53,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:53,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:53,972 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:54,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:54,180 INFO L427 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:54,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:54,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1530303668, now seen corresponding path program 52 times [2020-10-05 22:17:54,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:54,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290541856] [2020-10-05 22:17:54,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:54,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:54,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290541856] [2020-10-05 22:17:54,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [336326577] [2020-10-05 22:17:54,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:54,306 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:54,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:54,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:54,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:54,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:54,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:54,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71379446] [2020-10-05 22:17:54,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:54,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:54,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:54,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:54,497 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-05 22:17:54,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:54,686 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-05 22:17:54,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:54,686 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:54,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:54,688 INFO L225 Difference]: With dead ends: 179 [2020-10-05 22:17:54,688 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 22:17:54,688 INFO L675 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 [2020-10-05 22:17:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 22:17:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 134. [2020-10-05 22:17:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-05 22:17:54,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 338 transitions. [2020-10-05 22:17:54,694 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 338 transitions. Word has length 13 [2020-10-05 22:17:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:54,694 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 338 transitions. [2020-10-05 22:17:54,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:54,695 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 338 transitions. [2020-10-05 22:17:54,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:54,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:54,695 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:54,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2020-10-05 22:17:54,899 INFO L427 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:54,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1529409938, now seen corresponding path program 53 times [2020-10-05 22:17:54,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:54,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262868295] [2020-10-05 22:17:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:54,981 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:54,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262868295] [2020-10-05 22:17:54,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51458509] [2020-10-05 22:17:54,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:17:55,020 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:55,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:55,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:55,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:55,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:55,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:55,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:55,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183957830] [2020-10-05 22:17:55,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:55,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:55,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:55,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:55,133 INFO L87 Difference]: Start difference. First operand 134 states and 338 transitions. Second operand 15 states. [2020-10-05 22:17:55,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:55,312 INFO L93 Difference]: Finished difference Result 179 states and 426 transitions. [2020-10-05 22:17:55,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:17:55,312 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:55,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:55,313 INFO L225 Difference]: With dead ends: 179 [2020-10-05 22:17:55,313 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 22:17:55,313 INFO L675 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 [2020-10-05 22:17:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 22:17:55,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 136. [2020-10-05 22:17:55,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:17:55,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 344 transitions. [2020-10-05 22:17:55,316 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 344 transitions. Word has length 13 [2020-10-05 22:17:55,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:55,317 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 344 transitions. [2020-10-05 22:17:55,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:55,317 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 344 transitions. [2020-10-05 22:17:55,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:55,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:55,317 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:55,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-10-05 22:17:55,520 INFO L427 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:55,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:55,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1529408977, now seen corresponding path program 54 times [2020-10-05 22:17:55,521 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:55,521 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979134578] [2020-10-05 22:17:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:55,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979134578] [2020-10-05 22:17:55,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236664340] [2020-10-05 22:17:55,604 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:17:55,641 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:55,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:55,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:55,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:55,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:55,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:55,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316443322] [2020-10-05 22:17:55,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:55,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:55,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:55,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:55,740 INFO L87 Difference]: Start difference. First operand 136 states and 344 transitions. Second operand 15 states. [2020-10-05 22:17:55,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:55,933 INFO L93 Difference]: Finished difference Result 184 states and 436 transitions. [2020-10-05 22:17:55,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:55,933 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:55,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:55,935 INFO L225 Difference]: With dead ends: 184 [2020-10-05 22:17:55,935 INFO L226 Difference]: Without dead ends: 182 [2020-10-05 22:17:55,935 INFO L675 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 [2020-10-05 22:17:55,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-05 22:17:55,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 136. [2020-10-05 22:17:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:17:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 342 transitions. [2020-10-05 22:17:55,938 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 342 transitions. Word has length 13 [2020-10-05 22:17:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:55,938 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 342 transitions. [2020-10-05 22:17:55,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 342 transitions. [2020-10-05 22:17:55,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:55,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:55,939 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:56,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2020-10-05 22:17:56,148 INFO L427 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:56,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:56,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1529380147, now seen corresponding path program 55 times [2020-10-05 22:17:56,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:56,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424897199] [2020-10-05 22:17:56,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:56,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:56,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424897199] [2020-10-05 22:17:56,235 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025407738] [2020-10-05 22:17:56,235 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:17:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:56,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:56,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:56,402 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:56,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:56,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:56,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584084621] [2020-10-05 22:17:56,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:56,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:56,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:56,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:56,403 INFO L87 Difference]: Start difference. First operand 136 states and 342 transitions. Second operand 15 states. [2020-10-05 22:17:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:56,643 INFO L93 Difference]: Finished difference Result 179 states and 427 transitions. [2020-10-05 22:17:56,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:56,643 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:56,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:56,644 INFO L225 Difference]: With dead ends: 179 [2020-10-05 22:17:56,645 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 22:17:56,645 INFO L675 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 [2020-10-05 22:17:56,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 22:17:56,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 135. [2020-10-05 22:17:56,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-05 22:17:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 339 transitions. [2020-10-05 22:17:56,648 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 339 transitions. Word has length 13 [2020-10-05 22:17:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:56,648 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 339 transitions. [2020-10-05 22:17:56,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:56,649 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 339 transitions. [2020-10-05 22:17:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:56,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:56,649 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:56,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:56,861 INFO L427 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:56,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:56,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1501704308, now seen corresponding path program 56 times [2020-10-05 22:17:56,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:56,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855768312] [2020-10-05 22:17:56,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:56,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:56,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855768312] [2020-10-05 22:17:56,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183454855] [2020-10-05 22:17:56,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:56,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:17:56,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:56,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:56,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:57,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:57,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:57,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:57,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406938205] [2020-10-05 22:17:57,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:57,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:57,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:57,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:57,098 INFO L87 Difference]: Start difference. First operand 135 states and 339 transitions. Second operand 15 states. [2020-10-05 22:17:57,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:57,256 INFO L93 Difference]: Finished difference Result 176 states and 421 transitions. [2020-10-05 22:17:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:17:57,257 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:57,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:57,259 INFO L225 Difference]: With dead ends: 176 [2020-10-05 22:17:57,259 INFO L226 Difference]: Without dead ends: 174 [2020-10-05 22:17:57,259 INFO L675 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 [2020-10-05 22:17:57,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-05 22:17:57,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 139. [2020-10-05 22:17:57,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:17:57,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 350 transitions. [2020-10-05 22:17:57,262 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 350 transitions. Word has length 13 [2020-10-05 22:17:57,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:57,263 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 350 transitions. [2020-10-05 22:17:57,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:57,263 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 350 transitions. [2020-10-05 22:17:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:57,263 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:57,263 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:57,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:57,466 INFO L427 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:57,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:57,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1501703347, now seen corresponding path program 57 times [2020-10-05 22:17:57,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:57,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548517553] [2020-10-05 22:17:57,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:57,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:57,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548517553] [2020-10-05 22:17:57,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143827936] [2020-10-05 22:17:57,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:57,612 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:17:57,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:57,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:57,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:57,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:57,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:57,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:57,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256800664] [2020-10-05 22:17:57,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:57,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:57,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:57,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:57,747 INFO L87 Difference]: Start difference. First operand 139 states and 350 transitions. Second operand 15 states. [2020-10-05 22:17:57,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:57,946 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-05 22:17:57,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:57,947 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:57,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:57,948 INFO L225 Difference]: With dead ends: 185 [2020-10-05 22:17:57,949 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 22:17:57,949 INFO L675 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 [2020-10-05 22:17:57,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 22:17:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 140. [2020-10-05 22:17:57,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:17:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 352 transitions. [2020-10-05 22:17:57,952 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 352 transitions. Word has length 13 [2020-10-05 22:17:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:57,952 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 352 transitions. [2020-10-05 22:17:57,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:57,952 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 352 transitions. [2020-10-05 22:17:57,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:57,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:57,953 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:58,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:58,154 INFO L427 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:58,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:58,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1501674517, now seen corresponding path program 58 times [2020-10-05 22:17:58,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:58,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322872528] [2020-10-05 22:17:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:58,242 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:58,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322872528] [2020-10-05 22:17:58,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86894927] [2020-10-05 22:17:58,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:58,280 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:17:58,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:58,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:58,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:58,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:58,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:58,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252145262] [2020-10-05 22:17:58,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:58,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:58,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:58,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:58,386 INFO L87 Difference]: Start difference. First operand 140 states and 352 transitions. Second operand 15 states. [2020-10-05 22:17:58,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:58,586 INFO L93 Difference]: Finished difference Result 185 states and 439 transitions. [2020-10-05 22:17:58,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:17:58,587 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:58,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:58,588 INFO L225 Difference]: With dead ends: 185 [2020-10-05 22:17:58,588 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 22:17:58,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=278, Unknown=0, NotChecked=0, Total=420 [2020-10-05 22:17:58,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 22:17:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 138. [2020-10-05 22:17:58,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-05 22:17:58,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 345 transitions. [2020-10-05 22:17:58,592 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 345 transitions. Word has length 13 [2020-10-05 22:17:58,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:58,592 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 345 transitions. [2020-10-05 22:17:58,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:58,592 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 345 transitions. [2020-10-05 22:17:58,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:58,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:58,593 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:58,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:58,803 INFO L427 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:58,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:58,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1043911547, now seen corresponding path program 59 times [2020-10-05 22:17:58,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:58,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119050016] [2020-10-05 22:17:58,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:58,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119050016] [2020-10-05 22:17:58,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118321696] [2020-10-05 22:17:58,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:59,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:17:59,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:59,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:59,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:59,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:59,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:59,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:59,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593852170] [2020-10-05 22:17:59,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:59,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:59,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:59,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:59,121 INFO L87 Difference]: Start difference. First operand 138 states and 345 transitions. Second operand 15 states. [2020-10-05 22:17:59,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:59,183 INFO L93 Difference]: Finished difference Result 182 states and 432 transitions. [2020-10-05 22:17:59,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:17:59,184 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:59,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:59,185 INFO L225 Difference]: With dead ends: 182 [2020-10-05 22:17:59,185 INFO L226 Difference]: Without dead ends: 180 [2020-10-05 22:17:59,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-05 22:17:59,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-05 22:17:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 144. [2020-10-05 22:17:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:17:59,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 363 transitions. [2020-10-05 22:17:59,190 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 363 transitions. Word has length 13 [2020-10-05 22:17:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:59,190 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 363 transitions. [2020-10-05 22:17:59,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 363 transitions. [2020-10-05 22:17:59,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:59,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:59,191 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:17:59,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2020-10-05 22:17:59,392 INFO L427 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:17:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:17:59,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1043912508, now seen corresponding path program 60 times [2020-10-05 22:17:59,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:17:59,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588838459] [2020-10-05 22:17:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:17:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:17:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:59,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588838459] [2020-10-05 22:17:59,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676405511] [2020-10-05 22:17:59,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:17:59,527 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:17:59,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:17:59,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:17:59,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:17:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:17:59,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:17:59,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:17:59,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895277126] [2020-10-05 22:17:59,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:17:59,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:17:59,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:17:59,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:17:59,643 INFO L87 Difference]: Start difference. First operand 144 states and 363 transitions. Second operand 15 states. [2020-10-05 22:17:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:17:59,815 INFO L93 Difference]: Finished difference Result 185 states and 437 transitions. [2020-10-05 22:17:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:17:59,816 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:17:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:17:59,817 INFO L225 Difference]: With dead ends: 185 [2020-10-05 22:17:59,818 INFO L226 Difference]: Without dead ends: 183 [2020-10-05 22:17:59,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2020-10-05 22:17:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-05 22:17:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 142. [2020-10-05 22:17:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:17:59,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-05 22:17:59,821 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-05 22:17:59,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:17:59,822 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-05 22:17:59,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:17:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-05 22:17:59,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:17:59,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:17:59,822 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:00,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,79 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:00,034 INFO L427 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:00,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1043941338, now seen corresponding path program 61 times [2020-10-05 22:18:00,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:00,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912710020] [2020-10-05 22:18:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:00,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912710020] [2020-10-05 22:18:00,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445047768] [2020-10-05 22:18:00,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:00,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:00,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:00,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:00,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:00,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:00,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:00,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120124605] [2020-10-05 22:18:00,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:00,331 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:00,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:00,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:00,331 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:00,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:00,551 INFO L93 Difference]: Finished difference Result 191 states and 449 transitions. [2020-10-05 22:18:00,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:18:00,552 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:00,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:00,553 INFO L225 Difference]: With dead ends: 191 [2020-10-05 22:18:00,554 INFO L226 Difference]: Without dead ends: 189 [2020-10-05 22:18:00,554 INFO L675 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 [2020-10-05 22:18:00,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-05 22:18:00,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 140. [2020-10-05 22:18:00,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:18:00,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 351 transitions. [2020-10-05 22:18:00,557 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 351 transitions. Word has length 13 [2020-10-05 22:18:00,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:00,558 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 351 transitions. [2020-10-05 22:18:00,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:00,558 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 351 transitions. [2020-10-05 22:18:00,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:00,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:00,558 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:00,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:00,759 INFO L427 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:00,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:00,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1044835068, now seen corresponding path program 62 times [2020-10-05 22:18:00,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:00,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670778929] [2020-10-05 22:18:00,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:00,841 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670778929] [2020-10-05 22:18:00,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690258937] [2020-10-05 22:18:00,844 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:00,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:00,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:00,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:00,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:01,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:01,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:01,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267137498] [2020-10-05 22:18:01,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:01,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:01,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:01,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:01,032 INFO L87 Difference]: Start difference. First operand 140 states and 351 transitions. Second operand 15 states. [2020-10-05 22:18:01,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:01,259 INFO L93 Difference]: Finished difference Result 187 states and 441 transitions. [2020-10-05 22:18:01,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:01,260 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:01,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:01,261 INFO L225 Difference]: With dead ends: 187 [2020-10-05 22:18:01,262 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 22:18:01,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 22:18:01,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 142. [2020-10-05 22:18:01,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 357 transitions. [2020-10-05 22:18:01,266 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 357 transitions. Word has length 13 [2020-10-05 22:18:01,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:01,266 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 357 transitions. [2020-10-05 22:18:01,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:01,267 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 357 transitions. [2020-10-05 22:18:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:01,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:01,267 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:01,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2020-10-05 22:18:01,468 INFO L427 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:01,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1044836029, now seen corresponding path program 63 times [2020-10-05 22:18:01,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:01,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299146704] [2020-10-05 22:18:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:01,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299146704] [2020-10-05 22:18:01,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663407272] [2020-10-05 22:18:01,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:01,589 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:18:01,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:01,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:01,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:01,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:01,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:01,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183894534] [2020-10-05 22:18:01,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:01,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:01,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:01,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:01,700 INFO L87 Difference]: Start difference. First operand 142 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:01,939 INFO L93 Difference]: Finished difference Result 198 states and 463 transitions. [2020-10-05 22:18:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:01,940 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:01,941 INFO L225 Difference]: With dead ends: 198 [2020-10-05 22:18:01,941 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 22:18:01,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:18:01,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 22:18:01,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 142. [2020-10-05 22:18:01,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:01,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 356 transitions. [2020-10-05 22:18:01,945 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 356 transitions. Word has length 13 [2020-10-05 22:18:01,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:01,945 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 356 transitions. [2020-10-05 22:18:01,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:01,945 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 356 transitions. [2020-10-05 22:18:01,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:01,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:01,946 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:02,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:02,148 INFO L427 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:02,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1044864859, now seen corresponding path program 64 times [2020-10-05 22:18:02,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:02,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457012247] [2020-10-05 22:18:02,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:02,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:02,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457012247] [2020-10-05 22:18:02,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490494042] [2020-10-05 22:18:02,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:02,263 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:02,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:02,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:02,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:02,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:02,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:02,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755786070] [2020-10-05 22:18:02,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:02,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:02,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:02,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:02,388 INFO L87 Difference]: Start difference. First operand 142 states and 356 transitions. Second operand 15 states. [2020-10-05 22:18:02,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:02,645 INFO L93 Difference]: Finished difference Result 189 states and 446 transitions. [2020-10-05 22:18:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:02,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:02,647 INFO L225 Difference]: With dead ends: 189 [2020-10-05 22:18:02,647 INFO L226 Difference]: Without dead ends: 187 [2020-10-05 22:18:02,647 INFO L675 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 [2020-10-05 22:18:02,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-05 22:18:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 139. [2020-10-05 22:18:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:18:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 347 transitions. [2020-10-05 22:18:02,651 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 347 transitions. Word has length 13 [2020-10-05 22:18:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:02,651 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 347 transitions. [2020-10-05 22:18:02,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 347 transitions. [2020-10-05 22:18:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:02,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:02,652 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:02,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-10-05 22:18:02,853 INFO L427 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:02,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:02,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1681141037, now seen corresponding path program 65 times [2020-10-05 22:18:02,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:02,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911061830] [2020-10-05 22:18:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:02,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:02,961 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:02,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911061830] [2020-10-05 22:18:02,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115505566] [2020-10-05 22:18:02,962 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:02,999 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:18:02,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:03,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:03,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:03,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:03,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:03,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:03,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888825230] [2020-10-05 22:18:03,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:03,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:03,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:03,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:03,123 INFO L87 Difference]: Start difference. First operand 139 states and 347 transitions. Second operand 15 states. [2020-10-05 22:18:03,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:03,212 INFO L93 Difference]: Finished difference Result 178 states and 423 transitions. [2020-10-05 22:18:03,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:18:03,212 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:03,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:03,214 INFO L225 Difference]: With dead ends: 178 [2020-10-05 22:18:03,214 INFO L226 Difference]: Without dead ends: 176 [2020-10-05 22:18:03,214 INFO L675 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 [2020-10-05 22:18:03,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-05 22:18:03,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 143. [2020-10-05 22:18:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 359 transitions. [2020-10-05 22:18:03,217 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 359 transitions. Word has length 13 [2020-10-05 22:18:03,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:03,218 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 359 transitions. [2020-10-05 22:18:03,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 359 transitions. [2020-10-05 22:18:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:03,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:03,218 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:03,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:03,419 INFO L427 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:03,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:03,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1681141998, now seen corresponding path program 66 times [2020-10-05 22:18:03,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:03,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338125352] [2020-10-05 22:18:03,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:03,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:03,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338125352] [2020-10-05 22:18:03,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478396790] [2020-10-05 22:18:03,515 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:03,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:03,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:03,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:03,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:03,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:03,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:03,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348889250] [2020-10-05 22:18:03,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:03,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:03,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:03,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:03,677 INFO L87 Difference]: Start difference. First operand 143 states and 359 transitions. Second operand 15 states. [2020-10-05 22:18:03,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:03,866 INFO L93 Difference]: Finished difference Result 193 states and 452 transitions. [2020-10-05 22:18:03,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:03,867 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:03,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:03,868 INFO L225 Difference]: With dead ends: 193 [2020-10-05 22:18:03,869 INFO L226 Difference]: Without dead ends: 191 [2020-10-05 22:18:03,869 INFO L675 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 [2020-10-05 22:18:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-05 22:18:03,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 141. [2020-10-05 22:18:03,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:18:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 353 transitions. [2020-10-05 22:18:03,872 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 353 transitions. Word has length 13 [2020-10-05 22:18:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:03,872 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 353 transitions. [2020-10-05 22:18:03,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 353 transitions. [2020-10-05 22:18:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:03,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:03,873 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:04,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable91 [2020-10-05 22:18:04,084 INFO L427 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:04,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1681170828, now seen corresponding path program 67 times [2020-10-05 22:18:04,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:04,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74982232] [2020-10-05 22:18:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:04,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:04,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74982232] [2020-10-05 22:18:04,164 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550657857] [2020-10-05 22:18:04,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:04,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:04,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:04,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:04,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:04,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118935615] [2020-10-05 22:18:04,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:04,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:04,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:04,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:04,369 INFO L87 Difference]: Start difference. First operand 141 states and 353 transitions. Second operand 15 states. [2020-10-05 22:18:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:04,616 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-05 22:18:04,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:04,617 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:04,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:04,618 INFO L225 Difference]: With dead ends: 195 [2020-10-05 22:18:04,619 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 22:18:04,619 INFO L675 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 [2020-10-05 22:18:04,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 22:18:04,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 140. [2020-10-05 22:18:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:18:04,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 349 transitions. [2020-10-05 22:18:04,622 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 349 transitions. Word has length 13 [2020-10-05 22:18:04,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:04,622 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 349 transitions. [2020-10-05 22:18:04,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:04,622 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 349 transitions. [2020-10-05 22:18:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:04,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:04,622 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:04,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:04,823 INFO L427 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:04,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:04,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1701696827, now seen corresponding path program 68 times [2020-10-05 22:18:04,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:04,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36009102] [2020-10-05 22:18:04,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:04,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36009102] [2020-10-05 22:18:04,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669025666] [2020-10-05 22:18:04,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:04,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:04,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:04,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:04,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:05,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:05,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:05,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758221607] [2020-10-05 22:18:05,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:05,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:05,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:05,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:05,076 INFO L87 Difference]: Start difference. First operand 140 states and 349 transitions. Second operand 15 states. [2020-10-05 22:18:05,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:05,178 INFO L93 Difference]: Finished difference Result 174 states and 414 transitions. [2020-10-05 22:18:05,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:18:05,179 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:05,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:05,180 INFO L225 Difference]: With dead ends: 174 [2020-10-05 22:18:05,180 INFO L226 Difference]: Without dead ends: 172 [2020-10-05 22:18:05,181 INFO L675 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 [2020-10-05 22:18:05,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-05 22:18:05,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 142. [2020-10-05 22:18:05,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:18:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 355 transitions. [2020-10-05 22:18:05,184 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 355 transitions. Word has length 13 [2020-10-05 22:18:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:05,184 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 355 transitions. [2020-10-05 22:18:05,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 355 transitions. [2020-10-05 22:18:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:05,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:05,185 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:05,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable93 [2020-10-05 22:18:05,386 INFO L427 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:05,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1701697788, now seen corresponding path program 69 times [2020-10-05 22:18:05,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:05,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006270021] [2020-10-05 22:18:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:05,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006270021] [2020-10-05 22:18:05,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580519468] [2020-10-05 22:18:05,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:05,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:18:05,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:05,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:05,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:05,623 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:05,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:05,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:05,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597924212] [2020-10-05 22:18:05,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:05,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:05,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:05,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:05,625 INFO L87 Difference]: Start difference. First operand 142 states and 355 transitions. Second operand 15 states. [2020-10-05 22:18:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:05,856 INFO L93 Difference]: Finished difference Result 189 states and 443 transitions. [2020-10-05 22:18:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:18:05,857 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:05,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:05,858 INFO L225 Difference]: With dead ends: 189 [2020-10-05 22:18:05,858 INFO L226 Difference]: Without dead ends: 187 [2020-10-05 22:18:05,859 INFO L675 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 [2020-10-05 22:18:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-05 22:18:05,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2020-10-05 22:18:05,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:18:05,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 351 transitions. [2020-10-05 22:18:05,867 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 351 transitions. Word has length 13 [2020-10-05 22:18:05,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:05,867 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 351 transitions. [2020-10-05 22:18:05,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:05,867 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 351 transitions. [2020-10-05 22:18:05,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:05,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:05,868 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:06,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,88 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:06,069 INFO L427 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:06,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:06,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1702359917, now seen corresponding path program 70 times [2020-10-05 22:18:06,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:06,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146237024] [2020-10-05 22:18:06,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:06,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146237024] [2020-10-05 22:18:06,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954212544] [2020-10-05 22:18:06,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:06,183 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:06,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:06,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:06,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:06,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:06,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:06,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983752147] [2020-10-05 22:18:06,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:06,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:06,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:06,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:06,300 INFO L87 Difference]: Start difference. First operand 141 states and 351 transitions. Second operand 15 states. [2020-10-05 22:18:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:06,428 INFO L93 Difference]: Finished difference Result 175 states and 413 transitions. [2020-10-05 22:18:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:18:06,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:06,431 INFO L225 Difference]: With dead ends: 175 [2020-10-05 22:18:06,431 INFO L226 Difference]: Without dead ends: 173 [2020-10-05 22:18:06,431 INFO L675 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 [2020-10-05 22:18:06,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-05 22:18:06,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 145. [2020-10-05 22:18:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:06,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 22:18:06,435 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 22:18:06,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:06,435 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 22:18:06,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 22:18:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:06,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:06,436 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:06,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:06,638 INFO L427 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:06,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1702382237, now seen corresponding path program 71 times [2020-10-05 22:18:06,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:06,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724701955] [2020-10-05 22:18:06,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:06,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:06,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724701955] [2020-10-05 22:18:06,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316776809] [2020-10-05 22:18:06,709 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:06,745 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:18:06,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:06,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:06,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:06,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:06,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:06,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:06,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:06,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800491492] [2020-10-05 22:18:06,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:06,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:06,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:06,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:06,883 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:07,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:07,208 INFO L93 Difference]: Finished difference Result 195 states and 464 transitions. [2020-10-05 22:18:07,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:07,208 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:07,209 INFO L225 Difference]: With dead ends: 195 [2020-10-05 22:18:07,209 INFO L226 Difference]: Without dead ends: 190 [2020-10-05 22:18:07,209 INFO L675 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 [2020-10-05 22:18:07,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-05 22:18:07,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 143. [2020-10-05 22:18:07,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:07,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-05 22:18:07,213 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-05 22:18:07,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:07,213 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-05 22:18:07,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:07,213 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-05 22:18:07,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:07,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:07,214 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:07,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:07,415 INFO L427 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:07,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:07,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1702389708, now seen corresponding path program 72 times [2020-10-05 22:18:07,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:07,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627323775] [2020-10-05 22:18:07,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:07,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627323775] [2020-10-05 22:18:07,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551721973] [2020-10-05 22:18:07,484 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:07,523 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:07,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:07,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:07,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:07,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:07,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:07,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768271042] [2020-10-05 22:18:07,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:07,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:07,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:07,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:07,650 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-05 22:18:07,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:07,893 INFO L93 Difference]: Finished difference Result 187 states and 442 transitions. [2020-10-05 22:18:07,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:18:07,893 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:07,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:07,895 INFO L225 Difference]: With dead ends: 187 [2020-10-05 22:18:07,895 INFO L226 Difference]: Without dead ends: 185 [2020-10-05 22:18:07,895 INFO L675 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 [2020-10-05 22:18:07,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-05 22:18:07,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2020-10-05 22:18:07,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:07,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 22:18:07,899 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 22:18:07,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:07,899 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 22:18:07,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:07,899 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 22:18:07,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:07,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:07,900 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:08,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:08,102 INFO L427 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:08,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:08,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1702411067, now seen corresponding path program 73 times [2020-10-05 22:18:08,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:08,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132718930] [2020-10-05 22:18:08,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:08,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:08,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132718930] [2020-10-05 22:18:08,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184177731] [2020-10-05 22:18:08,172 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:08,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:08,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:08,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:08,320 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:08,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:08,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:08,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898555719] [2020-10-05 22:18:08,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:08,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:08,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:08,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:08,352 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:08,778 INFO L93 Difference]: Finished difference Result 212 states and 503 transitions. [2020-10-05 22:18:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:18:08,779 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:08,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:08,780 INFO L225 Difference]: With dead ends: 212 [2020-10-05 22:18:08,780 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 22:18:08,780 INFO L675 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 [2020-10-05 22:18:08,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 22:18:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-05 22:18:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 22:18:08,784 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 22:18:08,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:08,784 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 22:18:08,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:08,784 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 22:18:08,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:08,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:08,785 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:08,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2020-10-05 22:18:08,986 INFO L427 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:08,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:08,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1702412028, now seen corresponding path program 74 times [2020-10-05 22:18:08,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:08,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770806119] [2020-10-05 22:18:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:09,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:09,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770806119] [2020-10-05 22:18:09,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552440687] [2020-10-05 22:18:09,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:09,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:18:09,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:09,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:09,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:09,206 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:09,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:09,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:09,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20721710] [2020-10-05 22:18:09,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:09,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:09,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:09,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:09,226 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:09,534 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-05 22:18:09,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:09,535 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:09,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:09,537 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:18:09,537 INFO L226 Difference]: Without dead ends: 197 [2020-10-05 22:18:09,537 INFO L675 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 [2020-10-05 22:18:09,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-05 22:18:09,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 141. [2020-10-05 22:18:09,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:18:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 343 transitions. [2020-10-05 22:18:09,540 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 343 transitions. Word has length 13 [2020-10-05 22:18:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:09,540 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 343 transitions. [2020-10-05 22:18:09,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:09,540 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 343 transitions. [2020-10-05 22:18:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:09,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:09,540 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:09,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:09,741 INFO L427 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:09,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:09,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1702620348, now seen corresponding path program 75 times [2020-10-05 22:18:09,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:09,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694239478] [2020-10-05 22:18:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:09,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694239478] [2020-10-05 22:18:09,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825846182] [2020-10-05 22:18:09,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:09,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:18:09,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:09,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:09,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:10,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:10,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:10,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170085903] [2020-10-05 22:18:10,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:10,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:10,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:10,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:10,043 INFO L87 Difference]: Start difference. First operand 141 states and 343 transitions. Second operand 15 states. [2020-10-05 22:18:10,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:10,318 INFO L93 Difference]: Finished difference Result 198 states and 460 transitions. [2020-10-05 22:18:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:18:10,319 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:10,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:10,320 INFO L225 Difference]: With dead ends: 198 [2020-10-05 22:18:10,320 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 22:18:10,320 INFO L675 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 [2020-10-05 22:18:10,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 22:18:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 143. [2020-10-05 22:18:10,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:18:10,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 350 transitions. [2020-10-05 22:18:10,324 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 350 transitions. Word has length 13 [2020-10-05 22:18:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:10,324 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 350 transitions. [2020-10-05 22:18:10,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 350 transitions. [2020-10-05 22:18:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:10,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:10,325 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:10,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2020-10-05 22:18:10,534 INFO L427 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:10,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:10,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1703283438, now seen corresponding path program 76 times [2020-10-05 22:18:10,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:10,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016204706] [2020-10-05 22:18:10,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:10,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016204706] [2020-10-05 22:18:10,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847737119] [2020-10-05 22:18:10,602 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:10,646 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:18:10,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:10,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:10,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:10,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:10,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:10,821 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:10,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796791400] [2020-10-05 22:18:10,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:10,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:10,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:10,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:10,822 INFO L87 Difference]: Start difference. First operand 143 states and 350 transitions. Second operand 15 states. [2020-10-05 22:18:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:11,211 INFO L93 Difference]: Finished difference Result 209 states and 491 transitions. [2020-10-05 22:18:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 22:18:11,212 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:11,213 INFO L225 Difference]: With dead ends: 209 [2020-10-05 22:18:11,213 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 22:18:11,214 INFO L675 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 [2020-10-05 22:18:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 22:18:11,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 145. [2020-10-05 22:18:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:18:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 357 transitions. [2020-10-05 22:18:11,217 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 357 transitions. Word has length 13 [2020-10-05 22:18:11,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:11,218 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 357 transitions. [2020-10-05 22:18:11,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:11,218 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 357 transitions. [2020-10-05 22:18:11,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:11,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:11,218 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:11,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2020-10-05 22:18:11,419 INFO L427 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:11,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1703304797, now seen corresponding path program 77 times [2020-10-05 22:18:11,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:11,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457563795] [2020-10-05 22:18:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:11,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457563795] [2020-10-05 22:18:11,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591597826] [2020-10-05 22:18:11,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:11,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:18:11,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:11,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:11,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:11,646 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:11,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:11,680 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:11,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:11,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126259647] [2020-10-05 22:18:11,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:11,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:11,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:11,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:18:11,681 INFO L87 Difference]: Start difference. First operand 145 states and 357 transitions. Second operand 15 states. [2020-10-05 22:18:12,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:12,192 INFO L93 Difference]: Finished difference Result 217 states and 518 transitions. [2020-10-05 22:18:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:18:12,193 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:12,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:12,194 INFO L225 Difference]: With dead ends: 217 [2020-10-05 22:18:12,194 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 22:18:12,195 INFO L675 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 [2020-10-05 22:18:12,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 22:18:12,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 146. [2020-10-05 22:18:12,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 22:18:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-05 22:18:12,199 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 13 [2020-10-05 22:18:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:12,199 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-05 22:18:12,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-05 22:18:12,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:12,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:12,200 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:12,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2020-10-05 22:18:12,407 INFO L427 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:12,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:12,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1703305758, now seen corresponding path program 78 times [2020-10-05 22:18:12,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:12,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410985242] [2020-10-05 22:18:12,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:12,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410985242] [2020-10-05 22:18:12,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984999932] [2020-10-05 22:18:12,480 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:12,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:18:12,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:18:12,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:12,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:14,694 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:14,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:14,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:18:14,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238405616] [2020-10-05 22:18:14,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:18:14,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:14,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:18:14,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=142, Unknown=1, NotChecked=0, Total=210 [2020-10-05 22:18:14,735 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 15 states. [2020-10-05 22:18:19,034 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-10-05 22:18:23,259 WARN L193 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2020-10-05 22:18:23,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:18:23,734 INFO L93 Difference]: Finished difference Result 236 states and 562 transitions. [2020-10-05 22:18:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:18:23,735 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:18:23,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:18:23,736 INFO L225 Difference]: With dead ends: 236 [2020-10-05 22:18:23,736 INFO L226 Difference]: Without dead ends: 228 [2020-10-05 22:18:23,736 INFO L675 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 [2020-10-05 22:18:23,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-05 22:18:23,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 141. [2020-10-05 22:18:23,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:18:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 346 transitions. [2020-10-05 22:18:23,740 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 346 transitions. Word has length 13 [2020-10-05 22:18:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:18:23,740 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 346 transitions. [2020-10-05 22:18:23,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:18:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 346 transitions. [2020-10-05 22:18:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:18:23,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:18:23,741 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:18:23,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2020-10-05 22:18:23,942 INFO L427 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:18:23,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:18:23,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1703334588, now seen corresponding path program 79 times [2020-10-05 22:18:23,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:18:23,944 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810739705] [2020-10-05 22:18:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:18:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:24,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810739705] [2020-10-05 22:18:24,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819595783] [2020-10-05 22:18:24,019 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:18:24,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:18:24,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:18:24,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:18:24,214 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:18:24,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:18:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:18:25,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:18:25,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 22:18:25,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712638977] [2020-10-05 22:18:25,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 22:18:25,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:18:25,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 22:18:25,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=169, Unknown=1, NotChecked=0, Total=240 [2020-10-05 22:18:25,326 INFO L87 Difference]: Start difference. First operand 141 states and 346 transitions. Second operand 16 states. [2020-10-05 22:18:26,983 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 44 [2020-10-05 22:18:33,080 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 51 [2020-10-05 22:18:36,556 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification. DAG size of input: 60 DAG size of output: 58 [2020-10-05 22:18:53,233 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-10-05 22:19:16,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:16,608 INFO L93 Difference]: Finished difference Result 236 states and 556 transitions. [2020-10-05 22:19:16,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 22:19:16,609 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-05 22:19:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:16,610 INFO L225 Difference]: With dead ends: 236 [2020-10-05 22:19:16,610 INFO L226 Difference]: Without dead ends: 231 [2020-10-05 22:19:16,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 27.8s TimeCoverageRelationStatistics Valid=311, Invalid=734, Unknown=11, NotChecked=0, Total=1056 [2020-10-05 22:19:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-10-05 22:19:16,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 140. [2020-10-05 22:19:16,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:19:16,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 341 transitions. [2020-10-05 22:19:16,614 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 341 transitions. Word has length 13 [2020-10-05 22:19:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:16,614 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 341 transitions. [2020-10-05 22:19:16,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 22:19:16,615 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 341 transitions. [2020-10-05 22:19:16,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:16,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:16,615 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:16,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:16,826 INFO L427 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:16,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:16,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1709770188, now seen corresponding path program 80 times [2020-10-05 22:19:16,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:16,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789511597] [2020-10-05 22:19:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:16,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789511597] [2020-10-05 22:19:16,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288491925] [2020-10-05 22:19:16,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:16,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:19:16,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:16,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:16,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:17,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:17,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:17,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834878772] [2020-10-05 22:19:17,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:17,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:17,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:17,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:17,094 INFO L87 Difference]: Start difference. First operand 140 states and 341 transitions. Second operand 15 states. [2020-10-05 22:19:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:17,396 INFO L93 Difference]: Finished difference Result 197 states and 457 transitions. [2020-10-05 22:19:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:19:17,397 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:17,398 INFO L225 Difference]: With dead ends: 197 [2020-10-05 22:19:17,398 INFO L226 Difference]: Without dead ends: 195 [2020-10-05 22:19:17,398 INFO L675 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 [2020-10-05 22:19:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-05 22:19:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2020-10-05 22:19:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:19:17,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 352 transitions. [2020-10-05 22:19:17,402 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 352 transitions. Word has length 13 [2020-10-05 22:19:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:17,402 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 352 transitions. [2020-10-05 22:19:17,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 352 transitions. [2020-10-05 22:19:17,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:17,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:17,403 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:17,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:17,604 INFO L427 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1709771149, now seen corresponding path program 81 times [2020-10-05 22:19:17,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:17,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989119953] [2020-10-05 22:19:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:17,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989119953] [2020-10-05 22:19:17,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886745010] [2020-10-05 22:19:17,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:17,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:19:17,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:17,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:17,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:17,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:17,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:17,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339528067] [2020-10-05 22:19:17,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:17,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:17,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:17,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:17,839 INFO L87 Difference]: Start difference. First operand 143 states and 352 transitions. Second operand 15 states. [2020-10-05 22:19:18,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:18,110 INFO L93 Difference]: Finished difference Result 202 states and 467 transitions. [2020-10-05 22:19:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:19:18,111 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:18,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:18,111 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:19:18,111 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 22:19:18,112 INFO L675 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 [2020-10-05 22:19:18,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 22:19:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 143. [2020-10-05 22:19:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:19:18,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 351 transitions. [2020-10-05 22:19:18,114 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 351 transitions. Word has length 13 [2020-10-05 22:19:18,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:18,115 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 351 transitions. [2020-10-05 22:19:18,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:18,115 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 351 transitions. [2020-10-05 22:19:18,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:18,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:18,115 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:18,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2020-10-05 22:19:18,316 INFO L427 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:18,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:18,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1709799979, now seen corresponding path program 82 times [2020-10-05 22:19:18,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:18,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178384579] [2020-10-05 22:19:18,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:18,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:18,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178384579] [2020-10-05 22:19:18,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728701856] [2020-10-05 22:19:18,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:18,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:19:18,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:18,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:18,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:18,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:18,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:18,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654913399] [2020-10-05 22:19:18,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:18,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:18,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:18,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:18,582 INFO L87 Difference]: Start difference. First operand 143 states and 351 transitions. Second operand 15 states. [2020-10-05 22:19:18,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:18,873 INFO L93 Difference]: Finished difference Result 197 states and 458 transitions. [2020-10-05 22:19:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:19:18,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:18,874 INFO L225 Difference]: With dead ends: 197 [2020-10-05 22:19:18,874 INFO L226 Difference]: Without dead ends: 195 [2020-10-05 22:19:18,874 INFO L675 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 [2020-10-05 22:19:18,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-05 22:19:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 142. [2020-10-05 22:19:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:19:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 348 transitions. [2020-10-05 22:19:18,877 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 348 transitions. Word has length 13 [2020-10-05 22:19:18,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:18,878 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 348 transitions. [2020-10-05 22:19:18,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 348 transitions. [2020-10-05 22:19:18,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:18,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:18,878 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:19,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2020-10-05 22:19:19,079 INFO L427 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:19,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:19,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1730325978, now seen corresponding path program 83 times [2020-10-05 22:19:19,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:19,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593739773] [2020-10-05 22:19:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:19,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:19,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593739773] [2020-10-05 22:19:19,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239390648] [2020-10-05 22:19:19,157 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:19,196 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:19:19,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:19,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:19,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:19,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:19,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:19,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381452675] [2020-10-05 22:19:19,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:19,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:19,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:19,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:19,402 INFO L87 Difference]: Start difference. First operand 142 states and 348 transitions. Second operand 15 states. [2020-10-05 22:19:20,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:20,029 INFO L93 Difference]: Finished difference Result 214 states and 496 transitions. [2020-10-05 22:19:20,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 22:19:20,031 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:20,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:20,032 INFO L225 Difference]: With dead ends: 214 [2020-10-05 22:19:20,032 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 22:19:20,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-10-05 22:19:20,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 22:19:20,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 144. [2020-10-05 22:19:20,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:19:20,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 356 transitions. [2020-10-05 22:19:20,038 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 356 transitions. Word has length 13 [2020-10-05 22:19:20,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:20,039 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 356 transitions. [2020-10-05 22:19:20,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:20,039 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 356 transitions. [2020-10-05 22:19:20,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:20,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:20,040 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:20,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable108 [2020-10-05 22:19:20,251 INFO L427 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1730326939, now seen corresponding path program 84 times [2020-10-05 22:19:20,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:20,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372200200] [2020-10-05 22:19:20,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:20,363 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:20,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372200200] [2020-10-05 22:19:20,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143547819] [2020-10-05 22:19:20,364 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:20,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:19:20,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:20,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:20,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:20,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:20,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:20,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:20,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019027896] [2020-10-05 22:19:20,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:20,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:20,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:20,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:20,574 INFO L87 Difference]: Start difference. First operand 144 states and 356 transitions. Second operand 15 states. [2020-10-05 22:19:20,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:20,993 INFO L93 Difference]: Finished difference Result 217 states and 502 transitions. [2020-10-05 22:19:20,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:19:20,994 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:20,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:20,994 INFO L225 Difference]: With dead ends: 217 [2020-10-05 22:19:20,995 INFO L226 Difference]: Without dead ends: 215 [2020-10-05 22:19:20,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=495, Unknown=0, NotChecked=0, Total=702 [2020-10-05 22:19:20,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-05 22:19:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 145. [2020-10-05 22:19:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:19:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-05 22:19:20,999 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-05 22:19:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:20,999 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-05 22:19:20,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:20,999 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-05 22:19:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:21,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:21,000 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:21,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:21,209 INFO L427 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:21,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:21,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1730989068, now seen corresponding path program 85 times [2020-10-05 22:19:21,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:21,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112129913] [2020-10-05 22:19:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:21,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112129913] [2020-10-05 22:19:21,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297275877] [2020-10-05 22:19:21,289 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:21,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:21,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:21,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:21,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:21,470 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75135927] [2020-10-05 22:19:21,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:21,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:21,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:21,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:21,471 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-05 22:19:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:21,910 INFO L93 Difference]: Finished difference Result 211 states and 500 transitions. [2020-10-05 22:19:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 22:19:21,911 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:21,912 INFO L225 Difference]: With dead ends: 211 [2020-10-05 22:19:21,913 INFO L226 Difference]: Without dead ends: 209 [2020-10-05 22:19:21,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-10-05 22:19:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-05 22:19:21,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 147. [2020-10-05 22:19:21,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 22:19:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 22:19:21,918 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 22:19:21,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:21,918 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 22:19:21,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:21,918 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 22:19:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:21,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:21,919 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:22,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,104 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:22,121 INFO L427 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:22,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:22,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1731010427, now seen corresponding path program 86 times [2020-10-05 22:19:22,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:22,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714619713] [2020-10-05 22:19:22,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:22,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:22,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714619713] [2020-10-05 22:19:22,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959530269] [2020-10-05 22:19:22,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:22,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:19:22,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:22,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:22,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:22,349 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:19:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:22,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:22,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:22,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961779397] [2020-10-05 22:19:22,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:22,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:22,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:22,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:22,360 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 22:19:22,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:22,875 INFO L93 Difference]: Finished difference Result 211 states and 507 transitions. [2020-10-05 22:19:22,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:19:22,876 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:22,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:22,877 INFO L225 Difference]: With dead ends: 211 [2020-10-05 22:19:22,877 INFO L226 Difference]: Without dead ends: 206 [2020-10-05 22:19:22,877 INFO L675 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 [2020-10-05 22:19:22,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-05 22:19:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 147. [2020-10-05 22:19:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 22:19:22,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 22:19:22,880 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 22:19:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:22,880 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 22:19:22,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 22:19:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:22,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:22,881 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:23,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2020-10-05 22:19:23,082 INFO L427 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1731011388, now seen corresponding path program 87 times [2020-10-05 22:19:23,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:23,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586545941] [2020-10-05 22:19:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:23,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:23,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586545941] [2020-10-05 22:19:23,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514260264] [2020-10-05 22:19:23,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:23,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:19:23,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:23,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:23,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:23,317 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:19:23,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:23,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:23,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:23,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044089302] [2020-10-05 22:19:23,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:23,358 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:23,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:23,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:23,359 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 22:19:24,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:24,003 INFO L93 Difference]: Finished difference Result 227 states and 546 transitions. [2020-10-05 22:19:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 22:19:24,004 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:24,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:24,004 INFO L225 Difference]: With dead ends: 227 [2020-10-05 22:19:24,004 INFO L226 Difference]: Without dead ends: 222 [2020-10-05 22:19:24,005 INFO L675 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 [2020-10-05 22:19:24,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-05 22:19:24,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 145. [2020-10-05 22:19:24,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-05 22:19:24,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 360 transitions. [2020-10-05 22:19:24,008 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 360 transitions. Word has length 13 [2020-10-05 22:19:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:24,008 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 360 transitions. [2020-10-05 22:19:24,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 360 transitions. [2020-10-05 22:19:24,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:24,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:24,009 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:24,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2020-10-05 22:19:24,210 INFO L427 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:24,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:24,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1731018859, now seen corresponding path program 88 times [2020-10-05 22:19:24,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:24,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591258966] [2020-10-05 22:19:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:24,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:24,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591258966] [2020-10-05 22:19:24,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46159254] [2020-10-05 22:19:24,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:24,326 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:19:24,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:24,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:24,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:24,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:24,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:24,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951606384] [2020-10-05 22:19:24,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:24,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:24,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:24,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:24,461 INFO L87 Difference]: Start difference. First operand 145 states and 360 transitions. Second operand 15 states. [2020-10-05 22:19:24,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:24,981 INFO L93 Difference]: Finished difference Result 221 states and 523 transitions. [2020-10-05 22:19:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-05 22:19:24,982 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:24,983 INFO L225 Difference]: With dead ends: 221 [2020-10-05 22:19:24,983 INFO L226 Difference]: Without dead ends: 219 [2020-10-05 22:19:24,984 INFO L675 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 [2020-10-05 22:19:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-05 22:19:24,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 147. [2020-10-05 22:19:24,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-05 22:19:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 367 transitions. [2020-10-05 22:19:24,987 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 367 transitions. Word has length 13 [2020-10-05 22:19:24,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:24,988 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 367 transitions. [2020-10-05 22:19:24,988 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:24,988 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 367 transitions. [2020-10-05 22:19:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:24,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:24,989 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:25,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:25,193 INFO L427 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:25,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:25,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1731040218, now seen corresponding path program 89 times [2020-10-05 22:19:25,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:25,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169694068] [2020-10-05 22:19:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:25,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169694068] [2020-10-05 22:19:25,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405978397] [2020-10-05 22:19:25,277 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:25,314 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:19:25,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:25,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:25,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:25,420 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:19:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:25,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:25,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:25,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774773816] [2020-10-05 22:19:25,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:25,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:25,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:25,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:25,431 INFO L87 Difference]: Start difference. First operand 147 states and 367 transitions. Second operand 15 states. [2020-10-05 22:19:26,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:26,062 INFO L93 Difference]: Finished difference Result 240 states and 577 transitions. [2020-10-05 22:19:26,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:19:26,063 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:26,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:26,063 INFO L225 Difference]: With dead ends: 240 [2020-10-05 22:19:26,064 INFO L226 Difference]: Without dead ends: 232 [2020-10-05 22:19:26,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=349, Invalid=773, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 22:19:26,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-05 22:19:26,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 148. [2020-10-05 22:19:26,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 22:19:26,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 372 transitions. [2020-10-05 22:19:26,068 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 372 transitions. Word has length 13 [2020-10-05 22:19:26,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:26,068 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 372 transitions. [2020-10-05 22:19:26,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:26,068 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 372 transitions. [2020-10-05 22:19:26,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:26,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:26,069 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:26,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2020-10-05 22:19:26,277 INFO L427 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1731041179, now seen corresponding path program 90 times [2020-10-05 22:19:26,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:26,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15477639] [2020-10-05 22:19:26,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:26,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15477639] [2020-10-05 22:19:26,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412895706] [2020-10-05 22:19:26,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:26,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:19:26,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:26,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:26,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:26,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:19:26,586 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:26,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:26,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:26,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239977351] [2020-10-05 22:19:26,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:26,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:26,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:26,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:26,589 INFO L87 Difference]: Start difference. First operand 148 states and 372 transitions. Second operand 15 states. [2020-10-05 22:19:27,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:27,265 INFO L93 Difference]: Finished difference Result 238 states and 576 transitions. [2020-10-05 22:19:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:19:27,266 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:27,267 INFO L225 Difference]: With dead ends: 238 [2020-10-05 22:19:27,267 INFO L226 Difference]: Without dead ends: 230 [2020-10-05 22:19:27,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-10-05 22:19:27,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-05 22:19:27,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 142. [2020-10-05 22:19:27,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:19:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-05 22:19:27,271 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-05 22:19:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:27,271 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-05 22:19:27,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-05 22:19:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:27,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:27,272 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:27,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:27,473 INFO L427 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:27,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:27,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1731249499, now seen corresponding path program 91 times [2020-10-05 22:19:27,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:27,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200263837] [2020-10-05 22:19:27,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:27,559 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:27,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200263837] [2020-10-05 22:19:27,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792139769] [2020-10-05 22:19:27,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:27,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:27,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:27,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:27,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:27,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150490844] [2020-10-05 22:19:27,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:27,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:27,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:27,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:27,772 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-05 22:19:28,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:28,050 INFO L93 Difference]: Finished difference Result 195 states and 459 transitions. [2020-10-05 22:19:28,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:19:28,050 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:28,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:28,051 INFO L225 Difference]: With dead ends: 195 [2020-10-05 22:19:28,051 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 22:19:28,051 INFO L675 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 [2020-10-05 22:19:28,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 22:19:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 142. [2020-10-05 22:19:28,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:19:28,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 354 transitions. [2020-10-05 22:19:28,056 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 354 transitions. Word has length 13 [2020-10-05 22:19:28,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:28,056 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 354 transitions. [2020-10-05 22:19:28,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 354 transitions. [2020-10-05 22:19:28,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:28,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:28,057 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:28,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable116 [2020-10-05 22:19:28,258 INFO L427 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:28,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:28,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1731912589, now seen corresponding path program 92 times [2020-10-05 22:19:28,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:28,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759369751] [2020-10-05 22:19:28,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:28,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:28,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759369751] [2020-10-05 22:19:28,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120865816] [2020-10-05 22:19:28,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:28,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:19:28,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:28,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:28,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:28,527 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:28,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:28,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:19:28,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143352400] [2020-10-05 22:19:28,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:19:28,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:28,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:19:28,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:19:28,529 INFO L87 Difference]: Start difference. First operand 142 states and 354 transitions. Second operand 15 states. [2020-10-05 22:19:29,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:19:29,169 INFO L93 Difference]: Finished difference Result 206 states and 489 transitions. [2020-10-05 22:19:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:19:29,170 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:19:29,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:19:29,171 INFO L225 Difference]: With dead ends: 206 [2020-10-05 22:19:29,171 INFO L226 Difference]: Without dead ends: 204 [2020-10-05 22:19:29,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-10-05 22:19:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-05 22:19:29,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 143. [2020-10-05 22:19:29,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-05 22:19:29,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 356 transitions. [2020-10-05 22:19:29,178 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 356 transitions. Word has length 13 [2020-10-05 22:19:29,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:19:29,178 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 356 transitions. [2020-10-05 22:19:29,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:19:29,179 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 356 transitions. [2020-10-05 22:19:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:19:29,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:19:29,179 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:19:29,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:29,391 INFO L427 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:19:29,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:19:29,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1731934909, now seen corresponding path program 93 times [2020-10-05 22:19:29,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:19:29,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547586596] [2020-10-05 22:19:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:19:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:19:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:29,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547586596] [2020-10-05 22:19:29,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878847010] [2020-10-05 22:19:29,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:19:29,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:19:29,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:19:29,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:19:29,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:19:29,684 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:19:33,824 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 19 [2020-10-05 22:19:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:19:33,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:19:33,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 22:19:33,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528413490] [2020-10-05 22:19:33,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 22:19:33,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:19:33,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 22:19:33,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=171, Unknown=1, NotChecked=0, Total=240 [2020-10-05 22:19:33,826 INFO L87 Difference]: Start difference. First operand 143 states and 356 transitions. Second operand 16 states. [2020-10-05 22:19:35,850 WARN L193 SmtUtils]: Spent 1.60 s on a formula simplification that was a NOOP. DAG size: 25 [2020-10-05 22:19:54,242 WARN L193 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29 [2020-10-05 22:20:32,608 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 26 DAG size of output: 25 [2020-10-05 22:20:49,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:49,944 INFO L93 Difference]: Finished difference Result 260 states and 609 transitions. [2020-10-05 22:20:49,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-05 22:20:49,945 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2020-10-05 22:20:49,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:49,946 INFO L225 Difference]: With dead ends: 260 [2020-10-05 22:20:49,946 INFO L226 Difference]: Without dead ends: 255 [2020-10-05 22:20:49,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=389, Invalid=934, Unknown=9, NotChecked=0, Total=1332 [2020-10-05 22:20:49,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-05 22:20:49,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 139. [2020-10-05 22:20:49,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:20:49,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 339 transitions. [2020-10-05 22:20:49,951 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 339 transitions. Word has length 13 [2020-10-05 22:20:49,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:49,951 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 339 transitions. [2020-10-05 22:20:49,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 22:20:49,951 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 339 transitions. [2020-10-05 22:20:49,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:49,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:49,951 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:50,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2020-10-05 22:20:50,152 INFO L427 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:50,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:50,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1931415228, now seen corresponding path program 94 times [2020-10-05 22:20:50,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:50,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273262323] [2020-10-05 22:20:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:50,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273262323] [2020-10-05 22:20:50,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894616524] [2020-10-05 22:20:50,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:50,279 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:50,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:50,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:50,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:50,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:50,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:50,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974067044] [2020-10-05 22:20:50,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:50,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:50,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:50,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:50,413 INFO L87 Difference]: Start difference. First operand 139 states and 339 transitions. Second operand 15 states. [2020-10-05 22:20:50,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:50,639 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-05 22:20:50,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:20:50,640 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:50,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:50,641 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:20:50,641 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 22:20:50,641 INFO L675 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 [2020-10-05 22:20:50,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 22:20:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 141. [2020-10-05 22:20:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:20:50,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 345 transitions. [2020-10-05 22:20:50,645 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 345 transitions. Word has length 13 [2020-10-05 22:20:50,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:50,645 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 345 transitions. [2020-10-05 22:20:50,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:50,645 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 345 transitions. [2020-10-05 22:20:50,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:50,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:50,645 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:50,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:50,846 INFO L427 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:50,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:50,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1931416189, now seen corresponding path program 95 times [2020-10-05 22:20:50,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:50,847 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184167295] [2020-10-05 22:20:50,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:50,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:50,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184167295] [2020-10-05 22:20:50,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957447691] [2020-10-05 22:20:50,941 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:50,987 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:50,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:50,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:50,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:51,132 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:51,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:51,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:51,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200095327] [2020-10-05 22:20:51,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:51,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:51,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:51,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:51,134 INFO L87 Difference]: Start difference. First operand 141 states and 345 transitions. Second operand 15 states. [2020-10-05 22:20:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:51,467 INFO L93 Difference]: Finished difference Result 205 states and 471 transitions. [2020-10-05 22:20:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:20:51,468 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:51,469 INFO L225 Difference]: With dead ends: 205 [2020-10-05 22:20:51,469 INFO L226 Difference]: Without dead ends: 203 [2020-10-05 22:20:51,469 INFO L675 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 [2020-10-05 22:20:51,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-05 22:20:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 142. [2020-10-05 22:20:51,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:20:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 347 transitions. [2020-10-05 22:20:51,477 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 347 transitions. Word has length 13 [2020-10-05 22:20:51,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:51,477 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 347 transitions. [2020-10-05 22:20:51,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 347 transitions. [2020-10-05 22:20:51,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:51,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:51,478 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:51,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:51,688 INFO L427 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:51,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:51,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1931445019, now seen corresponding path program 96 times [2020-10-05 22:20:51,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:51,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472391286] [2020-10-05 22:20:51,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:51,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472391286] [2020-10-05 22:20:51,785 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260229885] [2020-10-05 22:20:51,785 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:51,825 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:20:51,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:51,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:51,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:51,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:51,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:51,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:51,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695609567] [2020-10-05 22:20:51,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:51,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:51,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:51,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:51,958 INFO L87 Difference]: Start difference. First operand 142 states and 347 transitions. Second operand 15 states. [2020-10-05 22:20:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:52,241 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-05 22:20:52,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:20:52,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:52,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:52,243 INFO L225 Difference]: With dead ends: 201 [2020-10-05 22:20:52,243 INFO L226 Difference]: Without dead ends: 199 [2020-10-05 22:20:52,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=345, Unknown=0, NotChecked=0, Total=506 [2020-10-05 22:20:52,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-05 22:20:52,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 137. [2020-10-05 22:20:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 22:20:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 334 transitions. [2020-10-05 22:20:52,246 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 334 transitions. Word has length 13 [2020-10-05 22:20:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:52,246 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 334 transitions. [2020-10-05 22:20:52,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:52,246 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 334 transitions. [2020-10-05 22:20:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:52,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:52,247 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:52,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:52,448 INFO L427 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:52,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:52,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1726322578, now seen corresponding path program 97 times [2020-10-05 22:20:52,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:52,449 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048783509] [2020-10-05 22:20:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:52,533 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:52,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048783509] [2020-10-05 22:20:52,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659784420] [2020-10-05 22:20:52,534 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:52,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:52,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:52,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:52,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:52,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714024259] [2020-10-05 22:20:52,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:52,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:52,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:52,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:52,728 INFO L87 Difference]: Start difference. First operand 137 states and 334 transitions. Second operand 15 states. [2020-10-05 22:20:52,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:52,989 INFO L93 Difference]: Finished difference Result 194 states and 449 transitions. [2020-10-05 22:20:52,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:20:52,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:52,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:52,990 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:20:52,990 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 22:20:52,991 INFO L675 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 [2020-10-05 22:20:52,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 22:20:52,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 140. [2020-10-05 22:20:52,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:20:52,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 345 transitions. [2020-10-05 22:20:52,993 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 345 transitions. Word has length 13 [2020-10-05 22:20:52,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:52,993 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 345 transitions. [2020-10-05 22:20:52,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:52,993 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 345 transitions. [2020-10-05 22:20:52,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:52,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:52,994 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:53,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2020-10-05 22:20:53,195 INFO L427 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:53,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:53,195 INFO L82 PathProgramCache]: Analyzing trace with hash -1726321617, now seen corresponding path program 98 times [2020-10-05 22:20:53,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:53,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631525392] [2020-10-05 22:20:53,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:53,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:53,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631525392] [2020-10-05 22:20:53,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094465472] [2020-10-05 22:20:53,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:53,357 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:53,357 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:53,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:53,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:53,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:53,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:53,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:53,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516372875] [2020-10-05 22:20:53,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:53,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:53,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:53,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:53,526 INFO L87 Difference]: Start difference. First operand 140 states and 345 transitions. Second operand 15 states. [2020-10-05 22:20:53,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:53,927 INFO L93 Difference]: Finished difference Result 209 states and 478 transitions. [2020-10-05 22:20:53,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 22:20:53,928 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:53,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:53,929 INFO L225 Difference]: With dead ends: 209 [2020-10-05 22:20:53,929 INFO L226 Difference]: Without dead ends: 207 [2020-10-05 22:20:53,929 INFO L675 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 [2020-10-05 22:20:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-05 22:20:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 140. [2020-10-05 22:20:53,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 22:20:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 344 transitions. [2020-10-05 22:20:53,932 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 344 transitions. Word has length 13 [2020-10-05 22:20:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:53,933 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 344 transitions. [2020-10-05 22:20:53,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 344 transitions. [2020-10-05 22:20:53,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:53,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:53,933 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:54,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:54,134 INFO L427 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:54,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:54,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1726292787, now seen corresponding path program 99 times [2020-10-05 22:20:54,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:54,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819265950] [2020-10-05 22:20:54,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:54,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819265950] [2020-10-05 22:20:54,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147045534] [2020-10-05 22:20:54,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:54,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:20:54,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:54,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:54,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:54,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:54,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:54,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157943493] [2020-10-05 22:20:54,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:54,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:54,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:54,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:54,417 INFO L87 Difference]: Start difference. First operand 140 states and 344 transitions. Second operand 15 states. [2020-10-05 22:20:54,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:54,766 INFO L93 Difference]: Finished difference Result 202 states and 464 transitions. [2020-10-05 22:20:54,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 22:20:54,767 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:54,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:54,767 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:20:54,767 INFO L226 Difference]: Without dead ends: 200 [2020-10-05 22:20:54,767 INFO L675 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 [2020-10-05 22:20:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-05 22:20:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 139. [2020-10-05 22:20:54,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:20:54,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-05 22:20:54,770 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-05 22:20:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:54,771 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-05 22:20:54,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:54,771 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-05 22:20:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:54,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:54,771 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:54,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2020-10-05 22:20:54,972 INFO L427 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:54,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:54,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1705766788, now seen corresponding path program 100 times [2020-10-05 22:20:54,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:54,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509559304] [2020-10-05 22:20:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:55,052 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:55,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509559304] [2020-10-05 22:20:55,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141651244] [2020-10-05 22:20:55,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:55,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:20:55,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:55,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:55,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:55,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:55,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:55,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:55,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672995831] [2020-10-05 22:20:55,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:55,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:55,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:55,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:55,241 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 15 states. [2020-10-05 22:20:55,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:55,577 INFO L93 Difference]: Finished difference Result 201 states and 465 transitions. [2020-10-05 22:20:55,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:20:55,578 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:55,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:55,579 INFO L225 Difference]: With dead ends: 201 [2020-10-05 22:20:55,579 INFO L226 Difference]: Without dead ends: 199 [2020-10-05 22:20:55,579 INFO L675 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 [2020-10-05 22:20:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-05 22:20:55,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 141. [2020-10-05 22:20:55,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-05 22:20:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 349 transitions. [2020-10-05 22:20:55,584 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 349 transitions. Word has length 13 [2020-10-05 22:20:55,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:55,584 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 349 transitions. [2020-10-05 22:20:55,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:55,584 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 349 transitions. [2020-10-05 22:20:55,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:55,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:55,585 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:55,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2020-10-05 22:20:55,787 INFO L427 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:55,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:55,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1705765827, now seen corresponding path program 101 times [2020-10-05 22:20:55,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:55,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773636330] [2020-10-05 22:20:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:55,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773636330] [2020-10-05 22:20:55,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479609341] [2020-10-05 22:20:55,880 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:55,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:20:55,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:55,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:55,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:56,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:56,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:56,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402635727] [2020-10-05 22:20:56,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:56,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:56,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:56,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:56,078 INFO L87 Difference]: Start difference. First operand 141 states and 349 transitions. Second operand 15 states. [2020-10-05 22:20:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:56,568 INFO L93 Difference]: Finished difference Result 215 states and 495 transitions. [2020-10-05 22:20:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 22:20:56,568 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:56,569 INFO L225 Difference]: With dead ends: 215 [2020-10-05 22:20:56,569 INFO L226 Difference]: Without dead ends: 213 [2020-10-05 22:20:56,569 INFO L675 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 [2020-10-05 22:20:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-05 22:20:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 142. [2020-10-05 22:20:56,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:20:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-05 22:20:56,574 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-05 22:20:56,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:56,574 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-05 22:20:56,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:56,574 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-05 22:20:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:56,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:56,575 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:56,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:56,784 INFO L427 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:56,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:56,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1705103698, now seen corresponding path program 102 times [2020-10-05 22:20:56,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:56,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039062076] [2020-10-05 22:20:56,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:56,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:56,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:56,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039062076] [2020-10-05 22:20:56,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678812161] [2020-10-05 22:20:56,871 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:56,912 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:20:56,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:56,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:56,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:57,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:57,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:57,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370210157] [2020-10-05 22:20:57,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:57,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:57,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:57,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:57,057 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-05 22:20:57,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:57,457 INFO L93 Difference]: Finished difference Result 196 states and 461 transitions. [2020-10-05 22:20:57,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 22:20:57,458 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:57,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:57,459 INFO L225 Difference]: With dead ends: 196 [2020-10-05 22:20:57,459 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 22:20:57,460 INFO L675 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 [2020-10-05 22:20:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 22:20:57,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 144. [2020-10-05 22:20:57,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:20:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 22:20:57,463 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 22:20:57,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:57,463 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 22:20:57,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:57,463 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 22:20:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:57,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:57,464 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:57,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:57,669 INFO L427 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:57,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1705082339, now seen corresponding path program 103 times [2020-10-05 22:20:57,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:57,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245116718] [2020-10-05 22:20:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:57,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:57,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245116718] [2020-10-05 22:20:57,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812086933] [2020-10-05 22:20:57,757 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:57,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:57,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:57,905 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:20:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:57,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:57,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:57,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392504174] [2020-10-05 22:20:57,917 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:57,917 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:57,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:57,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:57,918 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 22:20:58,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:58,253 INFO L93 Difference]: Finished difference Result 191 states and 460 transitions. [2020-10-05 22:20:58,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:20:58,253 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:58,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:58,254 INFO L225 Difference]: With dead ends: 191 [2020-10-05 22:20:58,254 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 22:20:58,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:20:58,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 22:20:58,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 144. [2020-10-05 22:20:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:20:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 22:20:58,258 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 22:20:58,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:58,258 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 22:20:58,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:58,258 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 22:20:58,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:58,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:58,259 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:58,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2020-10-05 22:20:58,460 INFO L427 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:58,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1705081378, now seen corresponding path program 104 times [2020-10-05 22:20:58,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:58,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109397715] [2020-10-05 22:20:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:58,548 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:58,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109397715] [2020-10-05 22:20:58,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735211020] [2020-10-05 22:20:58,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:58,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:20:58,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:58,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:58,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:58,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:20:58,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:58,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:58,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:58,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547307460] [2020-10-05 22:20:58,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:58,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:58,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:58,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:58,769 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 22:20:59,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:20:59,360 INFO L93 Difference]: Finished difference Result 232 states and 551 transitions. [2020-10-05 22:20:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:20:59,365 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:20:59,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:20:59,365 INFO L225 Difference]: With dead ends: 232 [2020-10-05 22:20:59,366 INFO L226 Difference]: Without dead ends: 227 [2020-10-05 22:20:59,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-10-05 22:20:59,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-05 22:20:59,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 142. [2020-10-05 22:20:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-05 22:20:59,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 353 transitions. [2020-10-05 22:20:59,370 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 353 transitions. Word has length 13 [2020-10-05 22:20:59,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:20:59,370 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 353 transitions. [2020-10-05 22:20:59,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:20:59,370 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 353 transitions. [2020-10-05 22:20:59,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:20:59,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:20:59,371 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:20:59,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129,123 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:59,572 INFO L427 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:20:59,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:20:59,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1705073907, now seen corresponding path program 105 times [2020-10-05 22:20:59,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:20:59,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995022189] [2020-10-05 22:20:59,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:20:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:20:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:59,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995022189] [2020-10-05 22:20:59,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805477049] [2020-10-05 22:20:59,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:20:59,694 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:20:59,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:20:59,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:20:59,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:20:59,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:20:59,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:20:59,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:20:59,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761582745] [2020-10-05 22:20:59,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:20:59,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:20:59,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:20:59,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:20:59,868 INFO L87 Difference]: Start difference. First operand 142 states and 353 transitions. Second operand 15 states. [2020-10-05 22:21:00,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:00,472 INFO L93 Difference]: Finished difference Result 222 states and 521 transitions. [2020-10-05 22:21:00,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-05 22:21:00,473 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:21:00,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:00,473 INFO L225 Difference]: With dead ends: 222 [2020-10-05 22:21:00,473 INFO L226 Difference]: Without dead ends: 220 [2020-10-05 22:21:00,474 INFO L675 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 [2020-10-05 22:21:00,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-05 22:21:00,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 144. [2020-10-05 22:21:00,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-10-05 22:21:00,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 360 transitions. [2020-10-05 22:21:00,477 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 360 transitions. Word has length 13 [2020-10-05 22:21:00,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:00,477 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 360 transitions. [2020-10-05 22:21:00,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:21:00,477 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 360 transitions. [2020-10-05 22:21:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:00,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:00,477 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:00,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,124 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:00,678 INFO L427 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:00,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:00,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1705052548, now seen corresponding path program 106 times [2020-10-05 22:21:00,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:00,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635283401] [2020-10-05 22:21:00,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:00,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:00,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635283401] [2020-10-05 22:21:00,768 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257549363] [2020-10-05 22:21:00,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:00,808 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:00,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:00,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:21:00,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:00,954 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:21:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:00,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:00,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:21:00,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774211488] [2020-10-05 22:21:00,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:21:00,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:00,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:21:00,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:21:00,989 INFO L87 Difference]: Start difference. First operand 144 states and 360 transitions. Second operand 15 states. [2020-10-05 22:21:01,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:01,843 INFO L93 Difference]: Finished difference Result 254 states and 608 transitions. [2020-10-05 22:21:01,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:21:01,844 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:21:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:01,844 INFO L225 Difference]: With dead ends: 254 [2020-10-05 22:21:01,844 INFO L226 Difference]: Without dead ends: 246 [2020-10-05 22:21:01,845 INFO L675 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 [2020-10-05 22:21:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-10-05 22:21:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 146. [2020-10-05 22:21:01,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-05 22:21:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-10-05 22:21:01,849 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 13 [2020-10-05 22:21:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:01,850 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-10-05 22:21:01,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:21:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-10-05 22:21:01,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:01,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:01,850 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:02,051 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,125 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:02,052 INFO L427 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:02,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1705051587, now seen corresponding path program 107 times [2020-10-05 22:21:02,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:02,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256475213] [2020-10-05 22:21:02,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:02,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256475213] [2020-10-05 22:21:02,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218665347] [2020-10-05 22:21:02,141 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:02,179 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:21:02,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:02,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:21:02,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:02,311 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:21:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:02,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:02,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:21:02,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88543701] [2020-10-05 22:21:02,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:21:02,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:02,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:21:02,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:21:02,339 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 15 states. [2020-10-05 22:21:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:03,151 INFO L93 Difference]: Finished difference Result 246 states and 581 transitions. [2020-10-05 22:21:03,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:21:03,152 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:21:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:03,153 INFO L225 Difference]: With dead ends: 246 [2020-10-05 22:21:03,153 INFO L226 Difference]: Without dead ends: 238 [2020-10-05 22:21:03,154 INFO L675 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 [2020-10-05 22:21:03,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-05 22:21:03,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 139. [2020-10-05 22:21:03,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:21:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 344 transitions. [2020-10-05 22:21:03,157 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 344 transitions. Word has length 13 [2020-10-05 22:21:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:03,157 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 344 transitions. [2020-10-05 22:21:03,158 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:21:03,158 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 344 transitions. [2020-10-05 22:21:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:03,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:03,158 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:03,368 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2020-10-05 22:21:03,369 INFO L427 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:03,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:03,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1704843267, now seen corresponding path program 108 times [2020-10-05 22:21:03,369 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:03,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628422692] [2020-10-05 22:21:03,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:03,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:03,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:03,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628422692] [2020-10-05 22:21:03,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045798641] [2020-10-05 22:21:03,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:03,495 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:21:03,495 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:03,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:21:03,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:03,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:03,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:03,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:21:03,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171783215] [2020-10-05 22:21:03,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:21:03,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:03,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:21:03,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:21:03,641 INFO L87 Difference]: Start difference. First operand 139 states and 344 transitions. Second operand 15 states. [2020-10-05 22:21:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:04,076 INFO L93 Difference]: Finished difference Result 208 states and 483 transitions. [2020-10-05 22:21:04,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 22:21:04,077 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:21:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:04,078 INFO L225 Difference]: With dead ends: 208 [2020-10-05 22:21:04,078 INFO L226 Difference]: Without dead ends: 206 [2020-10-05 22:21:04,078 INFO L675 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 [2020-10-05 22:21:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-05 22:21:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 136. [2020-10-05 22:21:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-05 22:21:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 337 transitions. [2020-10-05 22:21:04,081 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 337 transitions. Word has length 13 [2020-10-05 22:21:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:04,081 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 337 transitions. [2020-10-05 22:21:04,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:21:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 337 transitions. [2020-10-05 22:21:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:04,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:04,082 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:04,283 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2020-10-05 22:21:04,283 INFO L427 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:04,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1704180177, now seen corresponding path program 109 times [2020-10-05 22:21:04,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:04,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496960475] [2020-10-05 22:21:04,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:04,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:04,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496960475] [2020-10-05 22:21:04,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591610168] [2020-10-05 22:21:04,370 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:04,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:21:04,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:04,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:04,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:04,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:21:04,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663742708] [2020-10-05 22:21:04,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:21:04,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:04,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:21:04,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:21:04,548 INFO L87 Difference]: Start difference. First operand 136 states and 337 transitions. Second operand 15 states. [2020-10-05 22:21:05,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:05,127 INFO L93 Difference]: Finished difference Result 215 states and 507 transitions. [2020-10-05 22:21:05,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-05 22:21:05,128 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:21:05,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:05,129 INFO L225 Difference]: With dead ends: 215 [2020-10-05 22:21:05,129 INFO L226 Difference]: Without dead ends: 213 [2020-10-05 22:21:05,130 INFO L675 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 [2020-10-05 22:21:05,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-05 22:21:05,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 137. [2020-10-05 22:21:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 22:21:05,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-05 22:21:05,133 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-05 22:21:05,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:05,133 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-05 22:21:05,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:21:05,133 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-05 22:21:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:05,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:05,133 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:05,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2020-10-05 22:21:05,334 INFO L427 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:05,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:05,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1704158818, now seen corresponding path program 110 times [2020-10-05 22:21:05,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:05,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954652180] [2020-10-05 22:21:05,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:05,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954652180] [2020-10-05 22:21:05,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704122698] [2020-10-05 22:21:05,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:05,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:05,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:05,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:21:05,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:05,575 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:21:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:05,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:05,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:21:05,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948106255] [2020-10-05 22:21:05,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:21:05,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:05,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:21:05,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:21:05,589 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-05 22:21:06,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:06,233 INFO L93 Difference]: Finished difference Result 236 states and 563 transitions. [2020-10-05 22:21:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:21:06,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:21:06,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:06,235 INFO L225 Difference]: With dead ends: 236 [2020-10-05 22:21:06,235 INFO L226 Difference]: Without dead ends: 228 [2020-10-05 22:21:06,235 INFO L675 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 [2020-10-05 22:21:06,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-05 22:21:06,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 137. [2020-10-05 22:21:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-05 22:21:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 341 transitions. [2020-10-05 22:21:06,239 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 341 transitions. Word has length 13 [2020-10-05 22:21:06,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:06,239 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 341 transitions. [2020-10-05 22:21:06,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:21:06,239 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 341 transitions. [2020-10-05 22:21:06,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:06,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:06,239 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:06,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2020-10-05 22:21:06,440 INFO L427 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:06,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:06,441 INFO L82 PathProgramCache]: Analyzing trace with hash -1704157857, now seen corresponding path program 111 times [2020-10-05 22:21:06,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:06,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232071707] [2020-10-05 22:21:06,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:06,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:06,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232071707] [2020-10-05 22:21:06,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906652963] [2020-10-05 22:21:06,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:06,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:21:06,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:06,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:21:06,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:06,703 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:21:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:06,714 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:06,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:21:06,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433800216] [2020-10-05 22:21:06,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:21:06,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:06,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:21:06,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:21:06,716 INFO L87 Difference]: Start difference. First operand 137 states and 341 transitions. Second operand 15 states. [2020-10-05 22:21:07,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:07,428 INFO L93 Difference]: Finished difference Result 241 states and 576 transitions. [2020-10-05 22:21:07,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-05 22:21:07,429 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:21:07,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:07,430 INFO L225 Difference]: With dead ends: 241 [2020-10-05 22:21:07,430 INFO L226 Difference]: Without dead ends: 233 [2020-10-05 22:21:07,430 INFO L675 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 [2020-10-05 22:21:07,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-10-05 22:21:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 133. [2020-10-05 22:21:07,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-05 22:21:07,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 324 transitions. [2020-10-05 22:21:07,432 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 324 transitions. Word has length 13 [2020-10-05 22:21:07,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:07,433 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 324 transitions. [2020-10-05 22:21:07,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:21:07,433 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 324 transitions. [2020-10-05 22:21:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:07,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:07,433 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:07,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 130 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2020-10-05 22:21:07,640 INFO L427 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:07,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1704129027, now seen corresponding path program 112 times [2020-10-05 22:21:07,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:07,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489882661] [2020-10-05 22:21:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:07,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:07,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489882661] [2020-10-05 22:21:07,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026312784] [2020-10-05 22:21:07,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:07,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:07,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:07,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 22:21:07,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:07,889 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:21:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:07,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:07,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-10-05 22:21:07,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132892222] [2020-10-05 22:21:07,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 22:21:07,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:07,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 22:21:07,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 22:21:07,903 INFO L87 Difference]: Start difference. First operand 133 states and 324 transitions. Second operand 15 states. [2020-10-05 22:21:08,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:08,533 INFO L93 Difference]: Finished difference Result 232 states and 545 transitions. [2020-10-05 22:21:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-05 22:21:08,534 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 13 [2020-10-05 22:21:08,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:08,535 INFO L225 Difference]: With dead ends: 232 [2020-10-05 22:21:08,535 INFO L226 Difference]: Without dead ends: 224 [2020-10-05 22:21:08,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 261 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=325, Invalid=731, Unknown=0, NotChecked=0, Total=1056 [2020-10-05 22:21:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-05 22:21:08,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 130. [2020-10-05 22:21:08,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 22:21:08,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 305 transitions. [2020-10-05 22:21:08,539 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 305 transitions. Word has length 13 [2020-10-05 22:21:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:08,539 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 305 transitions. [2020-10-05 22:21:08,539 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 22:21:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 305 transitions. [2020-10-05 22:21:08,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:08,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:08,540 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:08,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137,131 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:08,751 INFO L427 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:08,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:08,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1141268816, now seen corresponding path program 6 times [2020-10-05 22:21:08,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:08,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042207277] [2020-10-05 22:21:08,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:08,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042207277] [2020-10-05 22:21:08,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518113880] [2020-10-05 22:21:08,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:08,909 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-05 22:21:08,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:08,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:08,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:09,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 22:21:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:09,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:09,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-05 22:21:09,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862579465] [2020-10-05 22:21:09,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-05 22:21:09,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:09,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-05 22:21:09,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-05 22:21:09,145 INFO L87 Difference]: Start difference. First operand 130 states and 305 transitions. Second operand 18 states. [2020-10-05 22:21:09,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:09,493 INFO L93 Difference]: Finished difference Result 185 states and 431 transitions. [2020-10-05 22:21:09,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:21:09,495 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-10-05 22:21:09,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:09,496 INFO L225 Difference]: With dead ends: 185 [2020-10-05 22:21:09,496 INFO L226 Difference]: Without dead ends: 180 [2020-10-05 22:21:09,497 INFO L675 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 [2020-10-05 22:21:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-05 22:21:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 139. [2020-10-05 22:21:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-05 22:21:09,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 341 transitions. [2020-10-05 22:21:09,501 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 341 transitions. Word has length 13 [2020-10-05 22:21:09,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:09,502 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 341 transitions. [2020-10-05 22:21:09,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-05 22:21:09,502 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 341 transitions. [2020-10-05 22:21:09,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:09,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:09,503 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:09,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2020-10-05 22:21:09,714 INFO L427 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:09,715 INFO L82 PathProgramCache]: Analyzing trace with hash 33766584, now seen corresponding path program 21 times [2020-10-05 22:21:09,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:09,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270826862] [2020-10-05 22:21:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:09,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270826862] [2020-10-05 22:21:09,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848244655] [2020-10-05 22:21:09,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:09,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 22:21:09,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:09,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:09,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:10,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:10,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:10,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725605332] [2020-10-05 22:21:10,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:10,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:10,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:10,209 INFO L87 Difference]: Start difference. First operand 139 states and 341 transitions. Second operand 17 states. [2020-10-05 22:21:10,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:10,281 INFO L93 Difference]: Finished difference Result 180 states and 423 transitions. [2020-10-05 22:21:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:21:10,282 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 22:21:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:10,282 INFO L225 Difference]: With dead ends: 180 [2020-10-05 22:21:10,283 INFO L226 Difference]: Without dead ends: 177 [2020-10-05 22:21:10,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:10,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-05 22:21:10,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 148. [2020-10-05 22:21:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 22:21:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-05 22:21:10,286 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-05 22:21:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:10,286 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-05 22:21:10,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:10,286 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-05 22:21:10,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:10,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:10,287 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:10,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable139 [2020-10-05 22:21:10,488 INFO L427 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:10,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:10,488 INFO L82 PathProgramCache]: Analyzing trace with hash -913710200, now seen corresponding path program 22 times [2020-10-05 22:21:10,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:10,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786065587] [2020-10-05 22:21:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:10,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786065587] [2020-10-05 22:21:10,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072782610] [2020-10-05 22:21:10,647 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:10,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:10,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:10,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:10,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:10,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:10,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:10,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441055079] [2020-10-05 22:21:10,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:10,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:10,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:10,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:10,881 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-05 22:21:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:10,980 INFO L93 Difference]: Finished difference Result 197 states and 456 transitions. [2020-10-05 22:21:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:21:10,981 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 22:21:10,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:10,982 INFO L225 Difference]: With dead ends: 197 [2020-10-05 22:21:10,982 INFO L226 Difference]: Without dead ends: 194 [2020-10-05 22:21:10,982 INFO L675 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 [2020-10-05 22:21:10,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-05 22:21:10,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 148. [2020-10-05 22:21:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-05 22:21:10,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 362 transitions. [2020-10-05 22:21:10,985 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 362 transitions. Word has length 13 [2020-10-05 22:21:10,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:10,985 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 362 transitions. [2020-10-05 22:21:10,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:10,986 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 362 transitions. [2020-10-05 22:21:10,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:10,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:10,986 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:11,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,134 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:11,187 INFO L427 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:11,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1775557960, now seen corresponding path program 23 times [2020-10-05 22:21:11,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:11,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379100305] [2020-10-05 22:21:11,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:11,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:11,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379100305] [2020-10-05 22:21:11,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921515940] [2020-10-05 22:21:11,327 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:11,362 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-05 22:21:11,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:11,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:11,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:11,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:11,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:11,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508460104] [2020-10-05 22:21:11,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:11,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:11,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:11,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:11,542 INFO L87 Difference]: Start difference. First operand 148 states and 362 transitions. Second operand 17 states. [2020-10-05 22:21:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:11,650 INFO L93 Difference]: Finished difference Result 196 states and 456 transitions. [2020-10-05 22:21:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:21:11,651 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 22:21:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:11,652 INFO L225 Difference]: With dead ends: 196 [2020-10-05 22:21:11,652 INFO L226 Difference]: Without dead ends: 193 [2020-10-05 22:21:11,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-10-05 22:21:11,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-05 22:21:11,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 149. [2020-10-05 22:21:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-05 22:21:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 367 transitions. [2020-10-05 22:21:11,655 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 367 transitions. Word has length 13 [2020-10-05 22:21:11,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:11,656 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 367 transitions. [2020-10-05 22:21:11,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:11,656 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 367 transitions. [2020-10-05 22:21:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:11,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:11,656 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:11,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,135 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:11,857 INFO L427 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:11,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1110622840, now seen corresponding path program 24 times [2020-10-05 22:21:11,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:11,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116770509] [2020-10-05 22:21:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:11,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:11,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116770509] [2020-10-05 22:21:11,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670683548] [2020-10-05 22:21:11,997 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:12,037 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-05 22:21:12,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:12,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:12,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:12,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:12,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:12,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:12,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403645017] [2020-10-05 22:21:12,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:12,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:12,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:12,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:12,233 INFO L87 Difference]: Start difference. First operand 149 states and 367 transitions. Second operand 17 states. [2020-10-05 22:21:12,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:12,375 INFO L93 Difference]: Finished difference Result 195 states and 456 transitions. [2020-10-05 22:21:12,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:21:12,376 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 22:21:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:12,376 INFO L225 Difference]: With dead ends: 195 [2020-10-05 22:21:12,376 INFO L226 Difference]: Without dead ends: 192 [2020-10-05 22:21:12,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2020-10-05 22:21:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-05 22:21:12,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 150. [2020-10-05 22:21:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-05 22:21:12,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 372 transitions. [2020-10-05 22:21:12,380 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 372 transitions. Word has length 13 [2020-10-05 22:21:12,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:12,380 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 372 transitions. [2020-10-05 22:21:12,380 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:12,380 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 372 transitions. [2020-10-05 22:21:12,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:12,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:12,381 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:12,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,136 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:12,581 INFO L427 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:12,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:12,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1089173320, now seen corresponding path program 25 times [2020-10-05 22:21:12,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:12,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703835310] [2020-10-05 22:21:12,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:12,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703835310] [2020-10-05 22:21:12,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112257275] [2020-10-05 22:21:12,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:12,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:12,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:12,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:12,933 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:12,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:12,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:12,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471375589] [2020-10-05 22:21:12,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:12,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:12,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:12,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:12,935 INFO L87 Difference]: Start difference. First operand 150 states and 372 transitions. Second operand 17 states. [2020-10-05 22:21:13,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:13,121 INFO L93 Difference]: Finished difference Result 194 states and 456 transitions. [2020-10-05 22:21:13,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:21:13,128 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 22:21:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:13,129 INFO L225 Difference]: With dead ends: 194 [2020-10-05 22:21:13,129 INFO L226 Difference]: Without dead ends: 191 [2020-10-05 22:21:13,129 INFO L675 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 [2020-10-05 22:21:13,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-05 22:21:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 152. [2020-10-05 22:21:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-05 22:21:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 379 transitions. [2020-10-05 22:21:13,132 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 379 transitions. Word has length 13 [2020-10-05 22:21:13,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:13,132 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 379 transitions. [2020-10-05 22:21:13,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:13,132 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 379 transitions. [2020-10-05 22:21:13,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:13,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:13,133 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:13,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,137 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:13,341 INFO L427 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:13,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:13,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1088481400, now seen corresponding path program 26 times [2020-10-05 22:21:13,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:13,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436012990] [2020-10-05 22:21:13,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:13,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:13,462 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:13,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436012990] [2020-10-05 22:21:13,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446475011] [2020-10-05 22:21:13,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:13,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:13,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:13,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:13,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:13,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:13,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871032519] [2020-10-05 22:21:13,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:13,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:13,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:13,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:13,707 INFO L87 Difference]: Start difference. First operand 152 states and 379 transitions. Second operand 17 states. [2020-10-05 22:21:13,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:13,941 INFO L93 Difference]: Finished difference Result 193 states and 456 transitions. [2020-10-05 22:21:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:21:13,942 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 22:21:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:13,943 INFO L225 Difference]: With dead ends: 193 [2020-10-05 22:21:13,943 INFO L226 Difference]: Without dead ends: 190 [2020-10-05 22:21:13,943 INFO L675 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 [2020-10-05 22:21:13,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-05 22:21:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-10-05 22:21:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-05 22:21:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 386 transitions. [2020-10-05 22:21:13,946 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 386 transitions. Word has length 13 [2020-10-05 22:21:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:13,946 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 386 transitions. [2020-10-05 22:21:13,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 386 transitions. [2020-10-05 22:21:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-05 22:21:13,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:13,947 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:14,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable144 [2020-10-05 22:21:14,147 INFO L427 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:14,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:14,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1088459080, now seen corresponding path program 27 times [2020-10-05 22:21:14,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:14,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550311555] [2020-10-05 22:21:14,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:14,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550311555] [2020-10-05 22:21:14,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248903157] [2020-10-05 22:21:14,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:14,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 22:21:14,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:14,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:14,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:14,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 22:21:14,501 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:14,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:14,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:14,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6739661] [2020-10-05 22:21:14,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:14,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:14,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:14,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:14,503 INFO L87 Difference]: Start difference. First operand 154 states and 386 transitions. Second operand 17 states. [2020-10-05 22:21:14,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:14,772 INFO L93 Difference]: Finished difference Result 202 states and 480 transitions. [2020-10-05 22:21:14,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:21:14,772 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 13 [2020-10-05 22:21:14,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:14,774 INFO L225 Difference]: With dead ends: 202 [2020-10-05 22:21:14,774 INFO L226 Difference]: Without dead ends: 196 [2020-10-05 22:21:14,774 INFO L675 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 [2020-10-05 22:21:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-05 22:21:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 151. [2020-10-05 22:21:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-05 22:21:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 382 transitions. [2020-10-05 22:21:14,778 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 382 transitions. Word has length 13 [2020-10-05 22:21:14,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:14,778 INFO L479 AbstractCegarLoop]: Abstraction has 151 states and 382 transitions. [2020-10-05 22:21:14,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:14,778 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 382 transitions. [2020-10-05 22:21:14,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:14,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:14,779 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:14,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2020-10-05 22:21:14,990 INFO L427 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:14,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:14,990 INFO L82 PathProgramCache]: Analyzing trace with hash -195697579, now seen corresponding path program 113 times [2020-10-05 22:21:14,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:14,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820523438] [2020-10-05 22:21:14,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:15,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:15,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820523438] [2020-10-05 22:21:15,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112092393] [2020-10-05 22:21:15,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:15,152 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:21:15,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:15,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:15,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:15,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:15,343 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:15,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739198488] [2020-10-05 22:21:15,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:15,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:15,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:15,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:15,344 INFO L87 Difference]: Start difference. First operand 151 states and 382 transitions. Second operand 17 states. [2020-10-05 22:21:15,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:15,412 INFO L93 Difference]: Finished difference Result 188 states and 456 transitions. [2020-10-05 22:21:15,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 22:21:15,413 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:15,414 INFO L225 Difference]: With dead ends: 188 [2020-10-05 22:21:15,414 INFO L226 Difference]: Without dead ends: 186 [2020-10-05 22:21:15,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-05 22:21:15,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 159. [2020-10-05 22:21:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-05 22:21:15,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 406 transitions. [2020-10-05 22:21:15,417 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 406 transitions. Word has length 14 [2020-10-05 22:21:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:15,418 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 406 transitions. [2020-10-05 22:21:15,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 406 transitions. [2020-10-05 22:21:15,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:15,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:15,418 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:15,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2020-10-05 22:21:15,619 INFO L427 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:15,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:15,620 INFO L82 PathProgramCache]: Analyzing trace with hash -195696618, now seen corresponding path program 114 times [2020-10-05 22:21:15,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:15,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167975661] [2020-10-05 22:21:15,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:15,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167975661] [2020-10-05 22:21:15,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054253981] [2020-10-05 22:21:15,745 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:15,785 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:21:15,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:15,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:15,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:16,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:16,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:16,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:16,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329849701] [2020-10-05 22:21:16,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:16,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:16,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:16,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:16,017 INFO L87 Difference]: Start difference. First operand 159 states and 406 transitions. Second operand 17 states. [2020-10-05 22:21:16,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:16,286 INFO L93 Difference]: Finished difference Result 199 states and 478 transitions. [2020-10-05 22:21:16,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:21:16,286 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:16,287 INFO L225 Difference]: With dead ends: 199 [2020-10-05 22:21:16,287 INFO L226 Difference]: Without dead ends: 197 [2020-10-05 22:21:16,287 INFO L675 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 [2020-10-05 22:21:16,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-05 22:21:16,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 157. [2020-10-05 22:21:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-05 22:21:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-05 22:21:16,291 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-05 22:21:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:16,291 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-05 22:21:16,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-05 22:21:16,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:16,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:16,292 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:16,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2020-10-05 22:21:16,493 INFO L427 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:16,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:16,493 INFO L82 PathProgramCache]: Analyzing trace with hash -195667788, now seen corresponding path program 115 times [2020-10-05 22:21:16,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:16,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383449806] [2020-10-05 22:21:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:16,625 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:16,625 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383449806] [2020-10-05 22:21:16,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402987742] [2020-10-05 22:21:16,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:16,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:16,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:16,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:16,920 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:16,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:16,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:16,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385481449] [2020-10-05 22:21:16,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:16,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:16,922 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-05 22:21:17,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:17,255 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-05 22:21:17,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 22:21:17,256 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:17,257 INFO L225 Difference]: With dead ends: 210 [2020-10-05 22:21:17,257 INFO L226 Difference]: Without dead ends: 208 [2020-10-05 22:21:17,257 INFO L675 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 [2020-10-05 22:21:17,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-05 22:21:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 155. [2020-10-05 22:21:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-10-05 22:21:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 394 transitions. [2020-10-05 22:21:17,261 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 394 transitions. Word has length 14 [2020-10-05 22:21:17,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:17,261 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 394 transitions. [2020-10-05 22:21:17,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 394 transitions. [2020-10-05 22:21:17,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:17,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:17,261 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:17,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 142 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable148 [2020-10-05 22:21:17,462 INFO L427 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:17,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:17,463 INFO L82 PathProgramCache]: Analyzing trace with hash -194774058, now seen corresponding path program 116 times [2020-10-05 22:21:17,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:17,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58993841] [2020-10-05 22:21:17,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:17,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:17,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58993841] [2020-10-05 22:21:17,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830063699] [2020-10-05 22:21:17,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:17,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:17,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:17,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:17,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:17,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:17,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:17,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:17,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926952712] [2020-10-05 22:21:17,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:17,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:17,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:17,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:17,932 INFO L87 Difference]: Start difference. First operand 155 states and 394 transitions. Second operand 17 states. [2020-10-05 22:21:18,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:18,278 INFO L93 Difference]: Finished difference Result 210 states and 500 transitions. [2020-10-05 22:21:18,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:21:18,279 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:18,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:18,279 INFO L225 Difference]: With dead ends: 210 [2020-10-05 22:21:18,279 INFO L226 Difference]: Without dead ends: 208 [2020-10-05 22:21:18,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=190, Invalid=362, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:21:18,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-05 22:21:18,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 157. [2020-10-05 22:21:18,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-05 22:21:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 400 transitions. [2020-10-05 22:21:18,284 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 400 transitions. Word has length 14 [2020-10-05 22:21:18,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:18,284 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 400 transitions. [2020-10-05 22:21:18,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:18,284 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 400 transitions. [2020-10-05 22:21:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:18,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:18,285 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:18,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 143 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2020-10-05 22:21:18,492 INFO L427 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:18,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:18,492 INFO L82 PathProgramCache]: Analyzing trace with hash -194773097, now seen corresponding path program 117 times [2020-10-05 22:21:18,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:18,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335546405] [2020-10-05 22:21:18,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:18,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:18,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335546405] [2020-10-05 22:21:18,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127838267] [2020-10-05 22:21:18,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:18,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-05 22:21:18,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:18,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:18,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:22,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:22,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:22,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:22,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991102831] [2020-10-05 22:21:22,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:22,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:22,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:22,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=187, Unknown=1, NotChecked=0, Total=272 [2020-10-05 22:21:22,620 INFO L87 Difference]: Start difference. First operand 157 states and 400 transitions. Second operand 17 states. [2020-10-05 22:21:26,839 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-05 22:21:27,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:27,128 INFO L93 Difference]: Finished difference Result 218 states and 517 transitions. [2020-10-05 22:21:27,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:21:27,128 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:27,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:27,130 INFO L225 Difference]: With dead ends: 218 [2020-10-05 22:21:27,130 INFO L226 Difference]: Without dead ends: 216 [2020-10-05 22:21:27,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=183, Invalid=368, Unknown=1, NotChecked=0, Total=552 [2020-10-05 22:21:27,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-05 22:21:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-05 22:21:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 22:21:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 22:21:27,134 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 22:21:27,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:27,134 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 22:21:27,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 22:21:27,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:27,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:27,135 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:27,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,144 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:27,336 INFO L427 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:27,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:27,336 INFO L82 PathProgramCache]: Analyzing trace with hash -194744267, now seen corresponding path program 118 times [2020-10-05 22:21:27,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:27,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25965117] [2020-10-05 22:21:27,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:27,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25965117] [2020-10-05 22:21:27,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774899102] [2020-10-05 22:21:27,457 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:27,497 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:27,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:27,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:27,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:27,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:27,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:27,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187560235] [2020-10-05 22:21:27,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:27,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:27,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:27,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:27,858 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 22:21:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:28,249 INFO L93 Difference]: Finished difference Result 212 states and 507 transitions. [2020-10-05 22:21:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:21:28,250 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:28,250 INFO L225 Difference]: With dead ends: 212 [2020-10-05 22:21:28,251 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 22:21:28,251 INFO L675 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 [2020-10-05 22:21:28,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 22:21:28,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 153. [2020-10-05 22:21:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-05 22:21:28,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 388 transitions. [2020-10-05 22:21:28,253 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 388 transitions. Word has length 14 [2020-10-05 22:21:28,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:28,253 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 388 transitions. [2020-10-05 22:21:28,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:28,253 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 388 transitions. [2020-10-05 22:21:28,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:28,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:28,254 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:28,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,145 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:28,454 INFO L427 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:28,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:28,455 INFO L82 PathProgramCache]: Analyzing trace with hash -167068428, now seen corresponding path program 119 times [2020-10-05 22:21:28,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:28,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252262737] [2020-10-05 22:21:28,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:28,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252262737] [2020-10-05 22:21:28,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [818482524] [2020-10-05 22:21:28,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:28,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:21:28,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:28,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:28,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:28,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:28,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:28,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589079706] [2020-10-05 22:21:28,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:28,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:28,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:28,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:28,840 INFO L87 Difference]: Start difference. First operand 153 states and 388 transitions. Second operand 17 states. [2020-10-05 22:21:29,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:29,253 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-05 22:21:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 22:21:29,254 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:29,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:29,255 INFO L225 Difference]: With dead ends: 212 [2020-10-05 22:21:29,255 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 22:21:29,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=217, Invalid=433, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:21:29,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 22:21:29,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 156. [2020-10-05 22:21:29,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 22:21:29,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 22:21:29,258 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 22:21:29,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:29,259 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 22:21:29,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:29,259 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 22:21:29,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:29,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:29,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:29,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,146 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:29,460 INFO L427 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:29,461 INFO L82 PathProgramCache]: Analyzing trace with hash -167067467, now seen corresponding path program 120 times [2020-10-05 22:21:29,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:29,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238055760] [2020-10-05 22:21:29,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:29,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:29,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238055760] [2020-10-05 22:21:29,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937012694] [2020-10-05 22:21:29,589 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:29,627 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 22:21:29,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:29,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:29,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:29,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:29,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:29,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386467849] [2020-10-05 22:21:29,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:29,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:29,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:29,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:29,828 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 22:21:30,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:30,251 INFO L93 Difference]: Finished difference Result 224 states and 529 transitions. [2020-10-05 22:21:30,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:21:30,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:30,253 INFO L225 Difference]: With dead ends: 224 [2020-10-05 22:21:30,253 INFO L226 Difference]: Without dead ends: 222 [2020-10-05 22:21:30,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:21:30,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-10-05 22:21:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 156. [2020-10-05 22:21:30,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 22:21:30,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 22:21:30,256 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 22:21:30,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:30,257 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 22:21:30,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:30,257 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 22:21:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:30,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:30,257 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:30,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,147 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:30,459 INFO L427 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:30,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:30,460 INFO L82 PathProgramCache]: Analyzing trace with hash -167038637, now seen corresponding path program 121 times [2020-10-05 22:21:30,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:30,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313513415] [2020-10-05 22:21:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:30,582 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:30,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313513415] [2020-10-05 22:21:30,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828756264] [2020-10-05 22:21:30,582 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:30,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:30,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:30,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:30,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:30,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209411930] [2020-10-05 22:21:30,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:30,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:30,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:30,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:30,816 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 22:21:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:31,172 INFO L93 Difference]: Finished difference Result 218 states and 519 transitions. [2020-10-05 22:21:31,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:21:31,175 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:31,176 INFO L225 Difference]: With dead ends: 218 [2020-10-05 22:21:31,176 INFO L226 Difference]: Without dead ends: 216 [2020-10-05 22:21:31,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=200, Invalid=400, Unknown=0, NotChecked=0, Total=600 [2020-10-05 22:21:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-05 22:21:31,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 156. [2020-10-05 22:21:31,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-05 22:21:31,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 397 transitions. [2020-10-05 22:21:31,178 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 397 transitions. Word has length 14 [2020-10-05 22:21:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:31,179 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 397 transitions. [2020-10-05 22:21:31,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:31,179 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 397 transitions. [2020-10-05 22:21:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:31,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:31,179 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:31,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154,148 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:31,388 INFO L427 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:31,388 INFO L82 PathProgramCache]: Analyzing trace with hash -166114155, now seen corresponding path program 122 times [2020-10-05 22:21:31,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:31,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240836299] [2020-10-05 22:21:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:31,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240836299] [2020-10-05 22:21:31,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983018450] [2020-10-05 22:21:31,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:31,573 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:31,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:31,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:31,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:31,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:31,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:31,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548364585] [2020-10-05 22:21:31,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:31,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:31,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:31,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:31,807 INFO L87 Difference]: Start difference. First operand 156 states and 397 transitions. Second operand 17 states. [2020-10-05 22:21:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:32,123 INFO L93 Difference]: Finished difference Result 206 states and 492 transitions. [2020-10-05 22:21:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:21:32,125 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:32,125 INFO L225 Difference]: With dead ends: 206 [2020-10-05 22:21:32,126 INFO L226 Difference]: Without dead ends: 204 [2020-10-05 22:21:32,126 INFO L675 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 [2020-10-05 22:21:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-05 22:21:32,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 154. [2020-10-05 22:21:32,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-05 22:21:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 389 transitions. [2020-10-05 22:21:32,129 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 389 transitions. Word has length 14 [2020-10-05 22:21:32,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:32,130 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 389 transitions. [2020-10-05 22:21:32,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:32,130 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 389 transitions. [2020-10-05 22:21:32,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:32,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:32,130 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:32,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 149 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2020-10-05 22:21:32,331 INFO L427 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:32,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:32,332 INFO L82 PathProgramCache]: Analyzing trace with hash 691806102, now seen corresponding path program 123 times [2020-10-05 22:21:32,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:32,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235552915] [2020-10-05 22:21:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:32,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235552915] [2020-10-05 22:21:32,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746604610] [2020-10-05 22:21:32,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:32,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-05 22:21:32,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:32,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:32,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:32,692 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:32,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:32,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:32,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320007549] [2020-10-05 22:21:32,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:32,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:32,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:32,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:32,694 INFO L87 Difference]: Start difference. First operand 154 states and 389 transitions. Second operand 17 states. [2020-10-05 22:21:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:33,004 INFO L93 Difference]: Finished difference Result 207 states and 495 transitions. [2020-10-05 22:21:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:21:33,006 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:33,006 INFO L225 Difference]: With dead ends: 207 [2020-10-05 22:21:33,007 INFO L226 Difference]: Without dead ends: 205 [2020-10-05 22:21:33,007 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=375, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:21:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-05 22:21:33,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 159. [2020-10-05 22:21:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-05 22:21:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 403 transitions. [2020-10-05 22:21:33,009 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 403 transitions. Word has length 14 [2020-10-05 22:21:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:33,010 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 403 transitions. [2020-10-05 22:21:33,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 403 transitions. [2020-10-05 22:21:33,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:33,010 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:33,011 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:33,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2020-10-05 22:21:33,212 INFO L427 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:33,213 INFO L82 PathProgramCache]: Analyzing trace with hash 691807063, now seen corresponding path program 124 times [2020-10-05 22:21:33,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:33,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114024138] [2020-10-05 22:21:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:33,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114024138] [2020-10-05 22:21:33,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280934978] [2020-10-05 22:21:33,347 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:33,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:33,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:33,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:33,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:33,583 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:33,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:33,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:33,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600320763] [2020-10-05 22:21:33,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:33,584 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:33,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:33,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:33,584 INFO L87 Difference]: Start difference. First operand 159 states and 403 transitions. Second operand 17 states. [2020-10-05 22:21:33,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:33,928 INFO L93 Difference]: Finished difference Result 217 states and 516 transitions. [2020-10-05 22:21:33,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 22:21:33,929 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:33,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:33,930 INFO L225 Difference]: With dead ends: 217 [2020-10-05 22:21:33,930 INFO L226 Difference]: Without dead ends: 215 [2020-10-05 22:21:33,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=176, Invalid=376, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:21:33,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-05 22:21:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 158. [2020-10-05 22:21:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-05 22:21:33,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 400 transitions. [2020-10-05 22:21:33,933 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 400 transitions. Word has length 14 [2020-10-05 22:21:33,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:33,933 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 400 transitions. [2020-10-05 22:21:33,933 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:33,933 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 400 transitions. [2020-10-05 22:21:33,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:33,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:33,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:34,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 151 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2020-10-05 22:21:34,134 INFO L427 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:34,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:34,135 INFO L82 PathProgramCache]: Analyzing trace with hash 691835893, now seen corresponding path program 125 times [2020-10-05 22:21:34,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:34,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452437892] [2020-10-05 22:21:34,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:34,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452437892] [2020-10-05 22:21:34,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132757575] [2020-10-05 22:21:34,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:34,349 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:21:34,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:34,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:34,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:34,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:34,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:34,698 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135587587] [2020-10-05 22:21:34,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:34,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:34,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:34,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:34,699 INFO L87 Difference]: Start difference. First operand 158 states and 400 transitions. Second operand 17 states. [2020-10-05 22:21:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:35,221 INFO L93 Difference]: Finished difference Result 223 states and 528 transitions. [2020-10-05 22:21:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:21:35,223 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:35,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:35,223 INFO L225 Difference]: With dead ends: 223 [2020-10-05 22:21:35,224 INFO L226 Difference]: Without dead ends: 221 [2020-10-05 22:21:35,224 INFO L675 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 [2020-10-05 22:21:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-05 22:21:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 162. [2020-10-05 22:21:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-05 22:21:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 411 transitions. [2020-10-05 22:21:35,230 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 411 transitions. Word has length 14 [2020-10-05 22:21:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:35,230 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 411 transitions. [2020-10-05 22:21:35,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 411 transitions. [2020-10-05 22:21:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:35,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:35,231 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:35,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 152 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2020-10-05 22:21:35,432 INFO L427 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:35,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:35,433 INFO L82 PathProgramCache]: Analyzing trace with hash 692730584, now seen corresponding path program 126 times [2020-10-05 22:21:35,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:35,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681926829] [2020-10-05 22:21:35,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:35,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681926829] [2020-10-05 22:21:35,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268625830] [2020-10-05 22:21:35,582 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:35,631 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:21:35,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:35,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:35,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:35,852 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:35,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:35,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:35,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455816794] [2020-10-05 22:21:35,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:35,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:35,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:35,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:35,854 INFO L87 Difference]: Start difference. First operand 162 states and 411 transitions. Second operand 17 states. [2020-10-05 22:21:36,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:36,255 INFO L93 Difference]: Finished difference Result 225 states and 531 transitions. [2020-10-05 22:21:36,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:21:36,256 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:36,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:36,257 INFO L225 Difference]: With dead ends: 225 [2020-10-05 22:21:36,257 INFO L226 Difference]: Without dead ends: 223 [2020-10-05 22:21:36,257 INFO L675 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 [2020-10-05 22:21:36,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-10-05 22:21:36,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 161. [2020-10-05 22:21:36,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-10-05 22:21:36,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 407 transitions. [2020-10-05 22:21:36,261 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 407 transitions. Word has length 14 [2020-10-05 22:21:36,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:36,261 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 407 transitions. [2020-10-05 22:21:36,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:36,261 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 407 transitions. [2020-10-05 22:21:36,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:36,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:36,262 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:36,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159,153 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:36,463 INFO L427 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:36,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:36,463 INFO L82 PathProgramCache]: Analyzing trace with hash 720435253, now seen corresponding path program 127 times [2020-10-05 22:21:36,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:36,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797239006] [2020-10-05 22:21:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:36,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797239006] [2020-10-05 22:21:36,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829406386] [2020-10-05 22:21:36,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:36,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:36,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:36,913 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:36,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:36,914 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:36,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309177466] [2020-10-05 22:21:36,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:36,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:36,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:36,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:36,915 INFO L87 Difference]: Start difference. First operand 161 states and 407 transitions. Second operand 17 states. [2020-10-05 22:21:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:37,320 INFO L93 Difference]: Finished difference Result 214 states and 509 transitions. [2020-10-05 22:21:37,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 22:21:37,321 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:37,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:37,321 INFO L225 Difference]: With dead ends: 214 [2020-10-05 22:21:37,321 INFO L226 Difference]: Without dead ends: 212 [2020-10-05 22:21:37,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:21:37,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-05 22:21:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 160. [2020-10-05 22:21:37,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-05 22:21:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 404 transitions. [2020-10-05 22:21:37,326 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 404 transitions. Word has length 14 [2020-10-05 22:21:37,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:37,326 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 404 transitions. [2020-10-05 22:21:37,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:37,326 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 404 transitions. [2020-10-05 22:21:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:37,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:37,326 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:37,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160,154 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:37,527 INFO L427 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:37,528 INFO L82 PathProgramCache]: Analyzing trace with hash 721388565, now seen corresponding path program 128 times [2020-10-05 22:21:37,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:37,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30164578] [2020-10-05 22:21:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:37,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30164578] [2020-10-05 22:21:37,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089712605] [2020-10-05 22:21:37,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:37,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 22:21:37,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:37,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:38,001 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:38,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:38,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:38,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137614587] [2020-10-05 22:21:38,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:38,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:38,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:38,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:38,003 INFO L87 Difference]: Start difference. First operand 160 states and 404 transitions. Second operand 17 states. [2020-10-05 22:21:38,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:38,275 INFO L93 Difference]: Finished difference Result 203 states and 486 transitions. [2020-10-05 22:21:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:21:38,277 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:38,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:38,277 INFO L225 Difference]: With dead ends: 203 [2020-10-05 22:21:38,278 INFO L226 Difference]: Without dead ends: 201 [2020-10-05 22:21:38,278 INFO L675 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 [2020-10-05 22:21:38,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-05 22:21:38,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 158. [2020-10-05 22:21:38,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-05 22:21:38,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 397 transitions. [2020-10-05 22:21:38,281 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 397 transitions. Word has length 14 [2020-10-05 22:21:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:38,281 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 397 transitions. [2020-10-05 22:21:38,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:38,281 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 397 transitions. [2020-10-05 22:21:38,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:38,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:38,282 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:38,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 155 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2020-10-05 22:21:38,483 INFO L427 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:38,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:38,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1998481017, now seen corresponding path program 129 times [2020-10-05 22:21:38,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:38,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97740203] [2020-10-05 22:21:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:38,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:38,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97740203] [2020-10-05 22:21:38,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643539921] [2020-10-05 22:21:38,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:38,724 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 22:21:38,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:38,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:38,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:38,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:38,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:38,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847643274] [2020-10-05 22:21:38,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:38,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:38,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:38,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:38,920 INFO L87 Difference]: Start difference. First operand 158 states and 397 transitions. Second operand 17 states. [2020-10-05 22:21:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:39,001 INFO L93 Difference]: Finished difference Result 212 states and 504 transitions. [2020-10-05 22:21:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 22:21:39,002 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:39,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:39,003 INFO L225 Difference]: With dead ends: 212 [2020-10-05 22:21:39,003 INFO L226 Difference]: Without dead ends: 210 [2020-10-05 22:21:39,003 INFO L675 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 [2020-10-05 22:21:39,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-05 22:21:39,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 166. [2020-10-05 22:21:39,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-05 22:21:39,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 421 transitions. [2020-10-05 22:21:39,006 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 421 transitions. Word has length 14 [2020-10-05 22:21:39,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:39,007 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 421 transitions. [2020-10-05 22:21:39,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 421 transitions. [2020-10-05 22:21:39,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:39,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:39,007 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:39,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,156 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:39,208 INFO L427 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:39,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:39,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1998480056, now seen corresponding path program 130 times [2020-10-05 22:21:39,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:39,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888168641] [2020-10-05 22:21:39,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:39,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888168641] [2020-10-05 22:21:39,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810800529] [2020-10-05 22:21:39,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:39,446 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 22:21:39,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:39,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:39,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:39,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:39,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:39,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653222326] [2020-10-05 22:21:39,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:39,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:39,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:39,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:39,661 INFO L87 Difference]: Start difference. First operand 166 states and 421 transitions. Second operand 17 states. [2020-10-05 22:21:39,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:39,945 INFO L93 Difference]: Finished difference Result 217 states and 513 transitions. [2020-10-05 22:21:39,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:21:39,947 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:39,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:39,947 INFO L225 Difference]: With dead ends: 217 [2020-10-05 22:21:39,948 INFO L226 Difference]: Without dead ends: 215 [2020-10-05 22:21:39,948 INFO L675 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 [2020-10-05 22:21:39,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-05 22:21:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 164. [2020-10-05 22:21:39,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-05 22:21:39,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-05 22:21:39,951 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-05 22:21:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:39,951 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-05 22:21:39,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:39,951 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-05 22:21:39,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:39,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:39,952 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:40,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,157 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:40,153 INFO L427 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1998451226, now seen corresponding path program 131 times [2020-10-05 22:21:40,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:40,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493489859] [2020-10-05 22:21:40,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:40,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493489859] [2020-10-05 22:21:40,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625328054] [2020-10-05 22:21:40,314 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:40,357 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-05 22:21:40,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:40,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:41,716 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:41,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:41,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:41,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985847335] [2020-10-05 22:21:41,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:41,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:41,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:41,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:41,717 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. [2020-10-05 22:21:42,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:42,088 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-05 22:21:42,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 22:21:42,089 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:42,089 INFO L225 Difference]: With dead ends: 227 [2020-10-05 22:21:42,089 INFO L226 Difference]: Without dead ends: 225 [2020-10-05 22:21:42,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-10-05 22:21:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-05 22:21:42,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 162. [2020-10-05 22:21:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-05 22:21:42,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 409 transitions. [2020-10-05 22:21:42,092 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 409 transitions. Word has length 14 [2020-10-05 22:21:42,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:42,093 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 409 transitions. [2020-10-05 22:21:42,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:42,093 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 409 transitions. [2020-10-05 22:21:42,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:42,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:42,093 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:42,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,158 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 22:21:42,298 INFO L427 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:42,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:42,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1997557496, now seen corresponding path program 132 times [2020-10-05 22:21:42,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:42,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625225283] [2020-10-05 22:21:42,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:42,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:42,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625225283] [2020-10-05 22:21:42,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374351756] [2020-10-05 22:21:42,444 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:42,486 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-05 22:21:42,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 22:21:42,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:42,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:42,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:42,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:42,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:42,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452762600] [2020-10-05 22:21:42,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:42,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:42,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2020-10-05 22:21:42,754 INFO L87 Difference]: Start difference. First operand 162 states and 409 transitions. Second operand 17 states. [2020-10-05 22:21:43,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 22:21:43,263 INFO L93 Difference]: Finished difference Result 227 states and 533 transitions. [2020-10-05 22:21:43,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 22:21:43,264 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 14 [2020-10-05 22:21:43,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 22:21:43,264 INFO L225 Difference]: With dead ends: 227 [2020-10-05 22:21:43,264 INFO L226 Difference]: Without dead ends: 225 [2020-10-05 22:21:43,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=442, Unknown=0, NotChecked=0, Total=650 [2020-10-05 22:21:43,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-05 22:21:43,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 164. [2020-10-05 22:21:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-05 22:21:43,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 415 transitions. [2020-10-05 22:21:43,268 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 415 transitions. Word has length 14 [2020-10-05 22:21:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 22:21:43,269 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 415 transitions. [2020-10-05 22:21:43,269 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 22:21:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 415 transitions. [2020-10-05 22:21:43,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-05 22:21:43,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 22:21:43,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 22:21:43,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable165 [2020-10-05 22:21:43,472 INFO L427 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 22:21:43,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 22:21:43,472 INFO L82 PathProgramCache]: Analyzing trace with hash -1997556535, now seen corresponding path program 133 times [2020-10-05 22:21:43,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 22:21:43,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158860390] [2020-10-05 22:21:43,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 22:21:43,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:43,616 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:43,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158860390] [2020-10-05 22:21:43,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016806246] [2020-10-05 22:21:43,617 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 22:21:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 22:21:43,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 22:21:43,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 22:21:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 22:21:48,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 22:21:48,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2020-10-05 22:21:48,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241619577] [2020-10-05 22:21:48,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 22:21:48,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 22:21:48,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 22:21:48,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=200, Unknown=1, NotChecked=0, Total=272 [2020-10-05 22:21:48,334 INFO L87 Difference]: Start difference. First operand 164 states and 415 transitions. Second operand 17 states. Received shutdown request... [2020-10-05 22:21:52,590 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 37 [2020-10-05 22:21:52,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 22:21:52,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 160 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2020-10-05 22:21:52,793 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 22:21:52,802 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 22:21:52,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 10:21:52 BasicIcfg [2020-10-05 22:21:52,802 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 22:21:52,804 INFO L168 Benchmark]: Toolchain (without parser) took 282410.66 ms. Allocated memory was 137.9 MB in the beginning and 231.2 MB in the end (delta: 93.3 MB). Free memory was 99.6 MB in the beginning and 78.9 MB in the end (delta: 20.7 MB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:52,804 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-10-05 22:21:52,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.57 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 99.6 MB in the beginning and 159.4 MB in the end (delta: -59.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:52,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 199.2 MB. Free memory was 159.4 MB in the beginning and 157.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:52,805 INFO L168 Benchmark]: Boogie Preprocessor took 27.69 ms. Allocated memory is still 199.2 MB. Free memory was 157.3 MB in the beginning and 155.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:52,806 INFO L168 Benchmark]: RCFGBuilder took 446.93 ms. Allocated memory is still 199.2 MB. Free memory was 155.3 MB in the beginning and 134.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:52,806 INFO L168 Benchmark]: TraceAbstraction took 281197.06 ms. Allocated memory was 199.2 MB in the beginning and 231.2 MB in the end (delta: 32.0 MB). Free memory was 134.9 MB in the beginning and 78.9 MB in the end (delta: 56.0 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2020-10-05 22:21:52,808 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.0 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 686.57 ms. Allocated memory was 137.9 MB in the beginning and 199.2 MB in the end (delta: 61.3 MB). Free memory was 99.6 MB in the beginning and 159.4 MB in the end (delta: -59.8 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 199.2 MB. Free memory was 159.4 MB in the beginning and 157.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.69 ms. Allocated memory is still 199.2 MB. Free memory was 157.3 MB in the beginning and 155.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.93 ms. Allocated memory is still 199.2 MB. Free memory was 155.3 MB in the beginning and 134.9 MB in the end (delta: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 281197.06 ms. Allocated memory was 199.2 MB in the beginning and 231.2 MB in the end (delta: 32.0 MB). Free memory was 134.9 MB in the beginning and 78.9 MB in the end (delta: 56.0 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.3s, 59 ProgramPointsBefore, 20 ProgramPointsAfterwards, 57 TransitionsBefore, 15 TransitionsAfterwards, 1032 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 26 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 576 VarBasedMoverChecksPositive, 14 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 0 MoverChecksTotal, 988 CheckedPairsTotal, 47 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 712]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 712). Cancelled while BasicCegarLoop was constructing difference of abstraction (164states) and FLOYD_HOARE automaton (currently 8 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (41 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: 281.0s, OverallIterations: 167, TraceHistogramMax: 6, AutomataDifference: 185.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 2169 SDtfs, 14681 SDslu, 14547 SDs, 0 SdLazy, 10269 SolverSat, 3458 SolverUnsat, 41 SolverUnknown, 0 SolverNotchecked, 83.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4066 GetRequests, 782 SyntacticMatches, 140 SemanticMatches, 3144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15694 ImplicationChecksByTransitivity, 143.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred in iteration=163, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 166 MinimizatonAttempts, 7387 StatesRemovedByMinimization, 166 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 51.6s InterpolantComputationTime, 4026 NumberOfCodeBlocks, 4026 NumberOfCodeBlocksAsserted, 504 NumberOfCheckSat, 3700 ConstructedInterpolants, 7 QuantifiedInterpolants, 378332 SizeOfPredicates, 159 NumberOfNonLiveVariables, 13676 ConjunctsInSsa, 1533 ConjunctsInUnsatCore, 326 InterpolantComputations, 8 PerfectInterpolantSequences, 0/1512 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