/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/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:59:44,751 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:59:44,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:59:44,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:59:44,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:59:44,817 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:59:44,818 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:59:44,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:59:44,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:59:44,828 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:59:44,829 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:59:44,831 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:59:44,832 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:59:44,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:59:44,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:59:44,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:59:44,842 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:59:44,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:59:44,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:59:44,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:59:44,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:59:44,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:59:44,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:59:44,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:59:44,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:59:44,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:59:44,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:59:44,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:59:44,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:59:44,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:59:44,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:59:44,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:59:44,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:59:44,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:59:44,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:59:44,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:59:44,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:59:44,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:59:44,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:59:44,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:59:44,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:59:44,876 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:59:44,899 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:59:44,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:59:44,901 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:59:44,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:59:44,902 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:59:44,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:59:44,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:59:44,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:59:44,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:59:44,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:59:44,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:59:44,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:59:44,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:59:44,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:59:44,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:59:44,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:59:44,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:59:44,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:59:44,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:59:44,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:59:44,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:59:44,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:59:44,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:59:44,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:59:44,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:59:44,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:59:44,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:59:44,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:59:44,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:59:44,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:59:45,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:59:45,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:59:45,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:59:45,372 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:59:45,374 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:59:45,375 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-09-24 15:59:45,453 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56fb3aa04/6b38f9665e804190b34996f07d9cbb9e/FLAGd62a72c71 [2020-09-24 15:59:46,010 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:59:46,010 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-09-24 15:59:46,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56fb3aa04/6b38f9665e804190b34996f07d9cbb9e/FLAGd62a72c71 [2020-09-24 15:59:46,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56fb3aa04/6b38f9665e804190b34996f07d9cbb9e [2020-09-24 15:59:46,338 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:59:46,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:59:46,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:59:46,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:59:46,350 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:59:46,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae2094d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46, skipping insertion in model container [2020-09-24 15:59:46,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:59:46,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:59:46,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:59:46,615 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:59:46,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:59:46,648 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:59:46,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46 WrapperNode [2020-09-24 15:59:46,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:59:46,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:59:46,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:59:46,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:59:46,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (1/1) ... [2020-09-24 15:59:46,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:59:46,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:59:46,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:59:46,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:59:46,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:59:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:59:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:59:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-09-24 15:59:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-09-24 15:59:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:59:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:59:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-09-24 15:59:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-09-24 15:59:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:59:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:59:46,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:59:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:59:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:59:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:59:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:59:46,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:59:47,160 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:59:47,161 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:59:47,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:59:47 BoogieIcfgContainer [2020-09-24 15:59:47,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:59:47,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:59:47,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:59:47,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:59:47,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:59:46" (1/3) ... [2020-09-24 15:59:47,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a2bfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:59:47, skipping insertion in model container [2020-09-24 15:59:47,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:59:46" (2/3) ... [2020-09-24 15:59:47,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a2bfd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:59:47, skipping insertion in model container [2020-09-24 15:59:47,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:59:47" (3/3) ... [2020-09-24 15:59:47,177 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-09-24 15:59:47,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:59:47,199 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:59:47,220 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:59:47,251 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:59:47,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:59:47,252 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:59:47,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:59:47,252 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:59:47,252 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:59:47,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:59:47,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:59:47,275 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 15:59:47,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-24 15:59:47,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:47,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:47,284 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:47,290 INFO L82 PathProgramCache]: Analyzing trace with hash 474032392, now seen corresponding path program 1 times [2020-09-24 15:59:47,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:47,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492325130] [2020-09-24 15:59:47,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:47,495 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:47,495 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:47,496 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:47,496 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:47,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-24 15:59:47,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:47,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 15:59:47,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:47,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 15:59:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:47,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 15:59:47,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:47,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:47,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:47,663 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:47,663 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:47,663 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:47,664 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:47,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:47,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:47,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:59:47,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:47,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:47,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:47,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:47,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:59:47,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492325130] [2020-09-24 15:59:47,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:59:47,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:59:47,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738850045] [2020-09-24 15:59:47,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:59:47,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:47,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:59:47,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:59:47,709 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 7 states. [2020-09-24 15:59:48,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:48,032 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-09-24 15:59:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:59:48,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-09-24 15:59:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:48,046 INFO L225 Difference]: With dead ends: 65 [2020-09-24 15:59:48,047 INFO L226 Difference]: Without dead ends: 37 [2020-09-24 15:59:48,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-24 15:59:48,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-24 15:59:48,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-09-24 15:59:48,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-24 15:59:48,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-09-24 15:59:48,107 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 22 [2020-09-24 15:59:48,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:48,108 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-09-24 15:59:48,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:59:48,108 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-09-24 15:59:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 15:59:48,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:48,110 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:48,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:59:48,111 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:48,112 INFO L82 PathProgramCache]: Analyzing trace with hash 705842607, now seen corresponding path program 1 times [2020-09-24 15:59:48,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:48,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290948156] [2020-09-24 15:59:48,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:48,280 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:48,280 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:48,281 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:48,281 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:48,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 15:59:48,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:48,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 15:59:48,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 15:59:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:48,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 15:59:48,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:48,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:48,547 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:48,548 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:48,548 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:48,548 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:48,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:48,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:48,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:48,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:48,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:48,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:59:48,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290948156] [2020-09-24 15:59:48,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:48,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 15:59:48,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206571698] [2020-09-24 15:59:48,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 15:59:48,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:48,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 15:59:48,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 15:59:48,564 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 14 states. [2020-09-24 15:59:49,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:49,086 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions. [2020-09-24 15:59:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 15:59:49,086 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-09-24 15:59:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:49,088 INFO L225 Difference]: With dead ends: 55 [2020-09-24 15:59:49,088 INFO L226 Difference]: Without dead ends: 49 [2020-09-24 15:59:49,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2020-09-24 15:59:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-24 15:59:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 47. [2020-09-24 15:59:49,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-24 15:59:49,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-09-24 15:59:49,101 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 34 [2020-09-24 15:59:49,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:49,101 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-09-24 15:59:49,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 15:59:49,102 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-09-24 15:59:49,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 15:59:49,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:49,104 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:49,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:59:49,105 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:49,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:49,105 INFO L82 PathProgramCache]: Analyzing trace with hash 180793302, now seen corresponding path program 2 times [2020-09-24 15:59:49,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:49,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181202194] [2020-09-24 15:59:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:49,301 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:49,302 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:49,302 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:49,302 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 15:59:49,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-24 15:59:49,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 15:59:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 15:59:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:49,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:49,616 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:49,617 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:49,617 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:49,617 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:49,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:49,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:49,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:49,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:49,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:49,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:59:49,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181202194] [2020-09-24 15:59:49,628 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:49,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 15:59:49,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008169185] [2020-09-24 15:59:49,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 15:59:49,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:49,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 15:59:49,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2020-09-24 15:59:49,632 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 20 states. [2020-09-24 15:59:50,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:50,602 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-09-24 15:59:50,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 15:59:50,602 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-09-24 15:59:50,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:50,604 INFO L225 Difference]: With dead ends: 67 [2020-09-24 15:59:50,604 INFO L226 Difference]: Without dead ends: 61 [2020-09-24 15:59:50,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=1444, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 15:59:50,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-24 15:59:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-09-24 15:59:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 15:59:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-24 15:59:50,625 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 46 [2020-09-24 15:59:50,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:50,626 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-24 15:59:50,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 15:59:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-24 15:59:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 15:59:50,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:50,633 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:50,633 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:59:50,634 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:50,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:50,634 INFO L82 PathProgramCache]: Analyzing trace with hash -68284547, now seen corresponding path program 3 times [2020-09-24 15:59:50,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:50,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288633153] [2020-09-24 15:59:50,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:50,965 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:50,966 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:50,967 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:50,968 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:50,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 15:59:50,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:50,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-24 15:59:50,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-09-24 15:59:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:50,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-24 15:59:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:59:51,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:51,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:51,498 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:51,498 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:51,499 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:51,501 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:51,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:51,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:51,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 15:59:51,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:51,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:51,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:59:51,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288633153] [2020-09-24 15:59:51,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:51,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-24 15:59:51,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480443327] [2020-09-24 15:59:51,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-24 15:59:51,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:51,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-24 15:59:51,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-09-24 15:59:51,531 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 26 states. [2020-09-24 15:59:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:52,878 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-09-24 15:59:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-24 15:59:52,879 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 58 [2020-09-24 15:59:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:52,881 INFO L225 Difference]: With dead ends: 79 [2020-09-24 15:59:52,881 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 15:59:52,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=482, Invalid=2710, Unknown=0, NotChecked=0, Total=3192 [2020-09-24 15:59:52,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 15:59:52,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2020-09-24 15:59:52,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 15:59:52,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2020-09-24 15:59:52,893 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 58 [2020-09-24 15:59:52,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:52,894 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2020-09-24 15:59:52,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-24 15:59:52,894 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2020-09-24 15:59:52,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 15:59:52,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:52,896 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:52,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:59:52,896 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:52,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:52,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1585959772, now seen corresponding path program 4 times [2020-09-24 15:59:52,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:52,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [617166024] [2020-09-24 15:59:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:53,287 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:53,287 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:53,287 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:53,287 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:53,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-24 15:59:53,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-24 15:59:53,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:53,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-09-24 15:59:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:53,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 15:59:53,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:53,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:53,805 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:53,805 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:53,805 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:53,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:53,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:53,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:53,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:59:53,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:53,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:53,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:53,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:59:53,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [617166024] [2020-09-24 15:59:53,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:53,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-09-24 15:59:53,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505485043] [2020-09-24 15:59:53,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-09-24 15:59:53,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:53,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-09-24 15:59:53,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2020-09-24 15:59:53,822 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 32 states. [2020-09-24 15:59:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:59:55,860 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-09-24 15:59:55,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-09-24 15:59:55,860 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 70 [2020-09-24 15:59:55,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:59:55,864 INFO L225 Difference]: With dead ends: 91 [2020-09-24 15:59:55,864 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 15:59:55,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=741, Invalid=4371, Unknown=0, NotChecked=0, Total=5112 [2020-09-24 15:59:55,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 15:59:55,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-09-24 15:59:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 15:59:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 83 transitions. [2020-09-24 15:59:55,889 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 83 transitions. Word has length 70 [2020-09-24 15:59:55,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:59:55,890 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 83 transitions. [2020-09-24 15:59:55,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-09-24 15:59:55,894 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 83 transitions. [2020-09-24 15:59:55,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 15:59:55,896 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:59:55,897 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:59:55,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 15:59:55,898 INFO L427 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:59:55,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:59:55,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1974781771, now seen corresponding path program 5 times [2020-09-24 15:59:55,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:59:55,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377030562] [2020-09-24 15:59:55,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:59:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:56,512 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:56,512 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:56,512 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:56,513 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:56,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 15:59:56,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:56,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-24 15:59:56,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-09-24 15:59:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 15:59:56,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 15:59:56,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:57,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:59:57,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:59:57,466 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:59:57,466 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:59:57,467 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:59:57,467 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:59:57,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 15:59:57,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:59:57,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 15:59:57,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:59:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:59:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:59:57,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:59:57,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 15:59:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:59:57,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377030562] [2020-09-24 15:59:57,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:59:57,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-09-24 15:59:57,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584887221] [2020-09-24 15:59:57,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-09-24 15:59:57,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:59:57,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-09-24 15:59:57,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2020-09-24 15:59:57,495 INFO L87 Difference]: Start difference. First operand 83 states and 83 transitions. Second operand 38 states. [2020-09-24 16:00:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:00,356 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2020-09-24 16:00:00,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-09-24 16:00:00,357 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 82 [2020-09-24 16:00:00,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:00,361 INFO L225 Difference]: With dead ends: 103 [2020-09-24 16:00:00,361 INFO L226 Difference]: Without dead ends: 97 [2020-09-24 16:00:00,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1606 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1055, Invalid=6427, Unknown=0, NotChecked=0, Total=7482 [2020-09-24 16:00:00,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-24 16:00:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-24 16:00:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 16:00:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-09-24 16:00:00,375 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 82 [2020-09-24 16:00:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:00,376 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-09-24 16:00:00,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-09-24 16:00:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-09-24 16:00:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-24 16:00:00,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:00,378 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:00,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:00:00,378 INFO L427 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:00,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:00,379 INFO L82 PathProgramCache]: Analyzing trace with hash 961781618, now seen corresponding path program 6 times [2020-09-24 16:00:00,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:00,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969349956] [2020-09-24 16:00:00,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:01,120 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:01,120 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:01,121 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:01,121 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:01,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-24 16:00:01,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:01,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-09-24 16:00:01,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-09-24 16:00:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:00:01,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 16:00:01,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:02,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:02,220 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:02,220 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:02,220 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:02,221 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:02,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:02,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:02,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:02,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:02,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:02,256 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:02,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969349956] [2020-09-24 16:00:02,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:02,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-09-24 16:00:02,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860698317] [2020-09-24 16:00:02,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-09-24 16:00:02,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:02,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-09-24 16:00:02,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1699, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 16:00:02,262 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 44 states. [2020-09-24 16:00:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:05,510 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions. [2020-09-24 16:00:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-09-24 16:00:05,511 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 94 [2020-09-24 16:00:05,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:05,513 INFO L225 Difference]: With dead ends: 115 [2020-09-24 16:00:05,513 INFO L226 Difference]: Without dead ends: 109 [2020-09-24 16:00:05,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2285 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1424, Invalid=8878, Unknown=0, NotChecked=0, Total=10302 [2020-09-24 16:00:05,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-24 16:00:05,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 107. [2020-09-24 16:00:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 16:00:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2020-09-24 16:00:05,528 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 94 [2020-09-24 16:00:05,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:05,528 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2020-09-24 16:00:05,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-09-24 16:00:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2020-09-24 16:00:05,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-24 16:00:05,531 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:05,531 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:05,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 16:00:05,531 INFO L427 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:05,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:05,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1667527961, now seen corresponding path program 7 times [2020-09-24 16:00:05,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:05,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871201358] [2020-09-24 16:00:05,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:06,505 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:06,505 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:06,506 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:06,506 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:06,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-24 16:00:06,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 948 [2020-09-24 16:00:06,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 84 [2020-09-24 16:00:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:00:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-24 16:00:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:07,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:07,708 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:07,708 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:07,709 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:07,709 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:07,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:07,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:07,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:07,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:07,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:07,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:07,732 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:07,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871201358] [2020-09-24 16:00:07,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:07,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-09-24 16:00:07,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104645829] [2020-09-24 16:00:07,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-09-24 16:00:07,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:07,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-09-24 16:00:07,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=2206, Unknown=0, NotChecked=0, Total=2450 [2020-09-24 16:00:07,736 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand 50 states. [2020-09-24 16:00:11,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:11,926 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions. [2020-09-24 16:00:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-09-24 16:00:11,926 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 106 [2020-09-24 16:00:11,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:11,929 INFO L225 Difference]: With dead ends: 127 [2020-09-24 16:00:11,929 INFO L226 Difference]: Without dead ends: 121 [2020-09-24 16:00:11,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3083 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1848, Invalid=11724, Unknown=0, NotChecked=0, Total=13572 [2020-09-24 16:00:11,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-24 16:00:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 119. [2020-09-24 16:00:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-09-24 16:00:11,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2020-09-24 16:00:11,944 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 106 [2020-09-24 16:00:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:11,945 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2020-09-24 16:00:11,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-09-24 16:00:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2020-09-24 16:00:11,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-09-24 16:00:11,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:11,947 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:11,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 16:00:11,948 INFO L427 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:11,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:11,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1856567232, now seen corresponding path program 8 times [2020-09-24 16:00:11,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:11,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709170230] [2020-09-24 16:00:11,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:13,131 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:13,131 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:13,131 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:13,132 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:13,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 16:00:13,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:13,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1157 [2020-09-24 16:00:13,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:13,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 95 [2020-09-24 16:00:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:00:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-24 16:00:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:14,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:14,746 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:14,746 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:14,746 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:14,746 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:14,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:14,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:14,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:14,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:14,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:14,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:14,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:14,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 0 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:14,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709170230] [2020-09-24 16:00:14,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:14,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-09-24 16:00:14,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255198688] [2020-09-24 16:00:14,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-09-24 16:00:14,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:14,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-09-24 16:00:14,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=2779, Unknown=0, NotChecked=0, Total=3080 [2020-09-24 16:00:14,773 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand 56 states. [2020-09-24 16:00:20,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:20,266 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2020-09-24 16:00:20,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-09-24 16:00:20,267 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 118 [2020-09-24 16:00:20,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:20,268 INFO L225 Difference]: With dead ends: 139 [2020-09-24 16:00:20,268 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 16:00:20,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4000 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=2327, Invalid=14965, Unknown=0, NotChecked=0, Total=17292 [2020-09-24 16:00:20,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 16:00:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-09-24 16:00:20,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-24 16:00:20,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-09-24 16:00:20,283 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 118 [2020-09-24 16:00:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:20,284 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-09-24 16:00:20,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-09-24 16:00:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-09-24 16:00:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 16:00:20,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:20,287 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:20,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 16:00:20,287 INFO L427 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:20,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:20,287 INFO L82 PathProgramCache]: Analyzing trace with hash -151316249, now seen corresponding path program 9 times [2020-09-24 16:00:20,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:20,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640672602] [2020-09-24 16:00:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:20,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:21,683 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:21,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:21,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:21,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:21,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-24 16:00:21,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:21,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-09-24 16:00:21,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 106 [2020-09-24 16:00:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:00:21,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-24 16:00:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:23,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:23,598 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:23,599 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:23,599 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:23,599 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:23,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:23,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:23,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:23,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:23,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:23,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:23,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 459 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:23,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640672602] [2020-09-24 16:00:23,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:23,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-09-24 16:00:23,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293619122] [2020-09-24 16:00:23,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-09-24 16:00:23,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:23,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-09-24 16:00:23,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=3418, Unknown=0, NotChecked=0, Total=3782 [2020-09-24 16:00:23,635 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 62 states. [2020-09-24 16:00:30,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:00:30,070 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2020-09-24 16:00:30,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-09-24 16:00:30,071 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 130 [2020-09-24 16:00:30,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:00:30,073 INFO L225 Difference]: With dead ends: 151 [2020-09-24 16:00:30,073 INFO L226 Difference]: Without dead ends: 145 [2020-09-24 16:00:30,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5121 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=2875, Invalid=18881, Unknown=0, NotChecked=0, Total=21756 [2020-09-24 16:00:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-09-24 16:00:30,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-09-24 16:00:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-09-24 16:00:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 143 transitions. [2020-09-24 16:00:30,086 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 143 transitions. Word has length 130 [2020-09-24 16:00:30,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:00:30,087 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 143 transitions. [2020-09-24 16:00:30,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-09-24 16:00:30,087 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 143 transitions. [2020-09-24 16:00:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 16:00:30,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:00:30,089 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:00:30,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 16:00:30,090 INFO L427 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:00:30,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:00:30,090 INFO L82 PathProgramCache]: Analyzing trace with hash -830445810, now seen corresponding path program 10 times [2020-09-24 16:00:30,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:00:30,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482032449] [2020-09-24 16:00:30,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:00:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:31,893 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-24 16:00:31,894 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:31,894 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:31,894 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:31,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-24 16:00:31,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1772 [2020-09-24 16:00:31,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 117 [2020-09-24 16:00:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:00:31,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-09-24 16:00:31,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:00:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:00:36,128 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:00:36,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:00:36,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:00:36,130 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:00:36,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:00:36,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:00:36,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:00:36,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:00:36,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:00:36,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:00:36,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:00:36,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:00:36,177 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 16:00:36,177 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482032449] [2020-09-24 16:00:36,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:00:36,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-09-24 16:00:36,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347247882] [2020-09-24 16:00:36,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-09-24 16:00:36,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:00:36,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-09-24 16:00:36,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=4423, Unknown=0, NotChecked=0, Total=4556 [2020-09-24 16:00:36,180 INFO L87 Difference]: Start difference. First operand 143 states and 143 transitions. Second operand 68 states.