/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/verifythis/tree_del_iter_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 16:12:25,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 16:12:25,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 16:12:25,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 16:12:25,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 16:12:25,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 16:12:25,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 16:12:25,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 16:12:25,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 16:12:25,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 16:12:25,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 16:12:25,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 16:12:25,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 16:12:25,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 16:12:25,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 16:12:25,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 16:12:25,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 16:12:25,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 16:12:25,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 16:12:25,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 16:12:25,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 16:12:25,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 16:12:25,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 16:12:25,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 16:12:25,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 16:12:25,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 16:12:25,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 16:12:25,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 16:12:25,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 16:12:25,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 16:12:25,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 16:12:25,647 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 16:12:25,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 16:12:25,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 16:12:25,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 16:12:25,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 16:12:25,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 16:12:25,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 16:12:25,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 16:12:25,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 16:12:25,672 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 16:12:25,673 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 16:12:25,718 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 16:12:25,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 16:12:25,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 16:12:25,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 16:12:25,721 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 16:12:25,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 16:12:25,721 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 16:12:25,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 16:12:25,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 16:12:25,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 16:12:25,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 16:12:25,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 16:12:25,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 16:12:25,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 16:12:25,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 16:12:25,724 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 16:12:25,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 16:12:25,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 16:12:25,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 16:12:25,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 16:12:25,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 16:12:25,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 16:12:25,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 16:12:25,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 16:12:25,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 16:12:25,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 16:12:25,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 16:12:25,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 16:12:25,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 16:12:25,727 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 16:12:26,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 16:12:26,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 16:12:26,252 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 16:12:26,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 16:12:26,255 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 16:12:26,257 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-24 16:12:26,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0610eca/059ba056041047be8a0373718f13818c/FLAG3d5b980b8 [2020-09-24 16:12:26,946 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 16:12:26,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_iter_incorrect.c [2020-09-24 16:12:26,957 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0610eca/059ba056041047be8a0373718f13818c/FLAG3d5b980b8 [2020-09-24 16:12:27,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e0610eca/059ba056041047be8a0373718f13818c [2020-09-24 16:12:27,278 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 16:12:27,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 16:12:27,290 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 16:12:27,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 16:12:27,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 16:12:27,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709958c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27, skipping insertion in model container [2020-09-24 16:12:27,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 16:12:27,349 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 16:12:27,592 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 16:12:27,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:12:27,633 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 16:12:27,753 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-24 16:12:27,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 16:12:27,791 INFO L208 MainTranslator]: Completed translation [2020-09-24 16:12:27,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27 WrapperNode [2020-09-24 16:12:27,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 16:12:27,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 16:12:27,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 16:12:27,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 16:12:27,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (1/1) ... [2020-09-24 16:12:27,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 16:12:27,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 16:12:27,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 16:12:27,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 16:12:27,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (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 16:12:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 16:12:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 16:12:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 16:12:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 16:12:27,954 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-24 16:12:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-24 16:12:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-24 16:12:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-24 16:12:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-24 16:12:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-24 16:12:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 16:12:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 16:12:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 16:12:27,956 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 16:12:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 16:12:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 16:12:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-24 16:12:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 16:12:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 16:12:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 16:12:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 16:12:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-24 16:12:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 16:12:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 16:12:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 16:12:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-24 16:12:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 16:12:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-24 16:12:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 16:12:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 16:12:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-24 16:12:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-24 16:12:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-24 16:12:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 16:12:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 16:12:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 16:12:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 16:12:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 16:12:28,579 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 16:12:28,579 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-24 16:12:28,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:12:28 BoogieIcfgContainer [2020-09-24 16:12:28,594 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 16:12:28,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 16:12:28,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 16:12:28,605 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 16:12:28,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 04:12:27" (1/3) ... [2020-09-24 16:12:28,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d429d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:12:28, skipping insertion in model container [2020-09-24 16:12:28,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 04:12:27" (2/3) ... [2020-09-24 16:12:28,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50d429d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 04:12:28, skipping insertion in model container [2020-09-24 16:12:28,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 04:12:28" (3/3) ... [2020-09-24 16:12:28,613 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_iter_incorrect.c [2020-09-24 16:12:28,625 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 16:12:28,639 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 16:12:28,663 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 16:12:28,705 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 16:12:28,705 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 16:12:28,705 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 16:12:28,705 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 16:12:28,705 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 16:12:28,706 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 16:12:28,706 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 16:12:28,706 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 16:12:28,731 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-09-24 16:12:28,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-24 16:12:28,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:28,745 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:28,746 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:28,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1732590877, now seen corresponding path program 1 times [2020-09-24 16:12:28,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:28,767 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037231066] [2020-09-24 16:12:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:29,028 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:29,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:29,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:29,029 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:29,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 16:12:29,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:29,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 16:12:29,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:12:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 16:12:29,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 16:12:29,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:29,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:29,170 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:29,170 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:29,171 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:29,171 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:29,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:29,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:29,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:29,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:29,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:29,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:12:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:29,232 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:29,232 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:29,232 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:29,236 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:29,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:29,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:29,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:12:29,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 16:12:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:29,261 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:29,261 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:29,261 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:29,263 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:29,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:29,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:29,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:12:29,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:29,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:29,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:29,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:12:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:12:29,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:29,301 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:29,302 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:29,302 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:29,303 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:29,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:29,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:29,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 16:12:29,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:12:29,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:29,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:12:29,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 16:12:29,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 16:12:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:29,391 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:29,391 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:29,391 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:29,392 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:29,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:12:29,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:29,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 16:12:29,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:29,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:12:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:12:29,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:12:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:29,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 16:12:29,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:29,486 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:29,486 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:29,487 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:29,487 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:29,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:12:29,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:29,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:29,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:29,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 16:12:29,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:29,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:29,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 16:12:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:29,517 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:29,518 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:29,518 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:29,518 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:29,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:12:29,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:29,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:29,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:29,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:12:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:29,537 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 16:12:29,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037231066] [2020-09-24 16:12:29,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:12:29,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 16:12:29,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72478559] [2020-09-24 16:12:29,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:12:29,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:29,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:12:29,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:12:29,571 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 11 states. [2020-09-24 16:12:30,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:30,849 INFO L93 Difference]: Finished difference Result 357 states and 415 transitions. [2020-09-24 16:12:30,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 16:12:30,851 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-24 16:12:30,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:30,870 INFO L225 Difference]: With dead ends: 357 [2020-09-24 16:12:30,870 INFO L226 Difference]: Without dead ends: 205 [2020-09-24 16:12:30,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2020-09-24 16:12:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-24 16:12:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 191. [2020-09-24 16:12:30,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-24 16:12:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2020-09-24 16:12:30,969 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 60 [2020-09-24 16:12:30,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:30,970 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2020-09-24 16:12:30,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:12:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2020-09-24 16:12:30,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 16:12:30,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:30,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:30,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 16:12:30,977 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:30,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:30,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1923885975, now seen corresponding path program 1 times [2020-09-24 16:12:30,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:30,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215580896] [2020-09-24 16:12:30,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,036 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,037 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,037 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-24 16:12:31,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 16:12:31,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:12:31,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:12:31,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 16:12:31,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,144 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,144 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,145 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,145 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:31,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:31,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:31,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:31,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:31,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:12:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,173 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,173 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,174 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,174 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:31,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 16:12:31,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 16:12:31,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:31,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:12:31,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 16:12:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,201 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,201 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,201 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,202 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:31,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:31,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:31,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:31,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 16:12:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,224 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 16:12:31,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 16:12:31,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:12:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:12:31,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 16:12:31,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 16:12:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,297 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,297 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,297 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,298 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:31,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:31,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:31,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:31,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:12:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,308 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,308 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,308 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,308 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:31,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:31,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:31,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:31,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-24 16:12:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,317 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,318 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,318 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:12:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:31,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:12:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-24 16:12:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,337 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,338 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,338 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,338 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:12:31,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:31,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 16:12:31,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:31,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 16:12:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:31,363 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:31,363 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:31,364 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:31,364 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:31,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:12:31,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:31,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:31,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:31,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:12:31,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:31,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 16:12:31,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215580896] [2020-09-24 16:12:31,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 16:12:31,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 16:12:31,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262911114] [2020-09-24 16:12:31,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 16:12:31,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:31,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 16:12:31,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 16:12:31,385 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand 12 states. [2020-09-24 16:12:32,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:32,692 INFO L93 Difference]: Finished difference Result 349 states and 394 transitions. [2020-09-24 16:12:32,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:12:32,693 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-09-24 16:12:32,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:32,697 INFO L225 Difference]: With dead ends: 349 [2020-09-24 16:12:32,698 INFO L226 Difference]: Without dead ends: 204 [2020-09-24 16:12:32,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-09-24 16:12:32,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-09-24 16:12:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 193. [2020-09-24 16:12:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-24 16:12:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 217 transitions. [2020-09-24 16:12:32,726 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 217 transitions. Word has length 80 [2020-09-24 16:12:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:32,726 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 217 transitions. [2020-09-24 16:12:32,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 16:12:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 217 transitions. [2020-09-24 16:12:32,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-24 16:12:32,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:32,731 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 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, 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, 1, 1] [2020-09-24 16:12:32,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 16:12:32,732 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:32,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:32,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1271695359, now seen corresponding path program 1 times [2020-09-24 16:12:32,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:32,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756872432] [2020-09-24 16:12:32,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:32,792 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:32,793 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:32,795 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:32,795 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:32,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 16:12:32,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 16:12:32,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:12:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:12:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 16:12:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:32,851 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:32,851 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:32,851 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:32,852 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:32,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:32,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:32,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:32,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:32,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:32,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:32,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:12:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:32,898 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:32,898 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:32,898 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:32,899 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:32,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:12:32,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:32,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:12:32,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:12:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:32,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 16:12:32,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:32,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:12:32,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:32,954 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:32,955 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:32,955 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:32,955 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:32,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:32,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:32,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:32,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:32,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 16:12:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:32,966 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:32,966 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:32,967 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:32,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:32,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:32,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:32,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:32,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:32,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 16:12:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:32,982 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:32,982 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:32,982 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:32,983 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:32,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:32,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:32,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:12:32,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:12:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:12:32,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:32,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:33,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 16:12:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:33,029 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:33,029 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:33,029 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:33,030 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:33,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 16:12:33,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:33,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:33,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:33,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:33,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 16:12:33,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:33,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:33,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 16:12:33,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:33,041 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:33,041 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:33,042 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:33,042 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:33,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:33,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:33,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:33,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:33,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:33,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:12:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:33,048 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:33,048 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:33,048 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:33,049 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:33,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:33,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:33,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:33,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:33,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:33,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:33,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-24 16:12:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:33,055 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:33,056 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:33,056 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:33,056 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:33,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:12:33,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:33,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:33,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:33,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:12:33,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:33,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 16:12:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:33,078 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:33,079 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:33,079 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:33,079 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:33,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:12:33,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:33,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 16:12:33,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:33,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:33,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 16:12:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:33,106 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:33,106 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:33,107 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:33,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:33,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:12:33,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:33,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:33,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:33,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:12:33,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:33,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 16:12:33,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756872432] [2020-09-24 16:12:33,124 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:12:33,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 16:12:33,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225616412] [2020-09-24 16:12:33,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:12:33,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:33,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:12:33,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:12:33,126 INFO L87 Difference]: Start difference. First operand 193 states and 217 transitions. Second operand 14 states. [2020-09-24 16:12:34,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:34,544 INFO L93 Difference]: Finished difference Result 348 states and 393 transitions. [2020-09-24 16:12:34,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 16:12:34,545 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 101 [2020-09-24 16:12:34,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:34,551 INFO L225 Difference]: With dead ends: 348 [2020-09-24 16:12:34,551 INFO L226 Difference]: Without dead ends: 206 [2020-09-24 16:12:34,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2020-09-24 16:12:34,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-24 16:12:34,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 195. [2020-09-24 16:12:34,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-09-24 16:12:34,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 220 transitions. [2020-09-24 16:12:34,594 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 220 transitions. Word has length 101 [2020-09-24 16:12:34,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:34,595 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 220 transitions. [2020-09-24 16:12:34,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:12:34,595 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 220 transitions. [2020-09-24 16:12:34,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 16:12:34,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:34,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:34,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 16:12:34,602 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:34,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:34,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1449297352, now seen corresponding path program 1 times [2020-09-24 16:12:34,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:34,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526331367] [2020-09-24 16:12:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,652 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,653 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,653 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 16:12:34,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 16:12:34,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 16:12:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-24 16:12:34,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 16:12:34,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,697 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,697 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,697 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,697 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:34,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:34,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:12:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,736 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,737 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,737 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,737 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:12:34,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:34,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:12:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,750 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,751 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,751 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,751 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:34,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 16:12:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,758 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,758 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,758 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:34,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:34,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 16:12:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,776 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,776 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,776 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,777 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 16:12:34,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 16:12:34,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 16:12:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 16:12:34,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 16:12:34,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 16:12:34,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,818 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,818 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,819 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,819 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:34,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:34,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 16:12:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,828 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,828 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,829 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,829 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:34,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 16:12:34,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:12:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:34,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:34,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 16:12:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,848 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,848 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,849 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,849 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 16:12:34,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 16:12:34,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 16:12:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,858 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,858 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,858 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:34,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:34,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:12:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,864 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,864 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,864 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,864 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:34,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:34,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-24 16:12:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,870 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,870 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,871 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,871 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:12:34,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 16:12:34,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 16:12:34,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,886 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,886 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,887 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,887 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:12:34,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 16:12:34,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 16:12:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:34,909 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:34,909 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:34,909 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:34,909 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:34,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:12:34,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:34,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:34,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:34,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 16:12:34,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:34,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-09-24 16:12:34,925 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526331367] [2020-09-24 16:12:34,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:12:34,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 16:12:34,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748229067] [2020-09-24 16:12:34,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 16:12:34,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:34,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 16:12:34,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-24 16:12:34,927 INFO L87 Difference]: Start difference. First operand 195 states and 220 transitions. Second operand 11 states. [2020-09-24 16:12:36,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:36,135 INFO L93 Difference]: Finished difference Result 377 states and 431 transitions. [2020-09-24 16:12:36,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 16:12:36,136 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 124 [2020-09-24 16:12:36,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:36,141 INFO L225 Difference]: With dead ends: 377 [2020-09-24 16:12:36,141 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 16:12:36,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2020-09-24 16:12:36,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 16:12:36,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 200. [2020-09-24 16:12:36,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-24 16:12:36,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 225 transitions. [2020-09-24 16:12:36,158 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 225 transitions. Word has length 124 [2020-09-24 16:12:36,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:36,159 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 225 transitions. [2020-09-24 16:12:36,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 16:12:36,159 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 225 transitions. [2020-09-24 16:12:36,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-24 16:12:36,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:36,162 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 16:12:36,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 16:12:36,162 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:36,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:36,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1187421704, now seen corresponding path program 1 times [2020-09-24 16:12:36,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:36,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730309883] [2020-09-24 16:12:36,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,223 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,223 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,223 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,224 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-24 16:12:36,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 16:12:36,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 16:12:36,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 16:12:36,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-24 16:12:36,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:36,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 16:12:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,295 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,296 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,296 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,296 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:36,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:36,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:12:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,341 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,341 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,342 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,342 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 16:12:36,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 16:12:36,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 16:12:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 16:12:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:36,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-24 16:12:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,395 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,395 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,395 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,396 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:36,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:36,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:36,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:36,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:36,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 16:12:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,408 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,408 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,409 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,409 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:36,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:36,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 16:12:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:36,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 16:12:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,423 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,423 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,423 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,424 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 16:12:36,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:36,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:36,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 16:12:36,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:36,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 16:12:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,435 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,436 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,436 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,436 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:36,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:36,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:36,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:36,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 16:12:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,442 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,442 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,443 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,443 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:36,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:36,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:36,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:36,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 16:12:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,456 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,456 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,456 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,457 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 16:12:36,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 16:12:36,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:36,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 16:12:36,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:36,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 16:12:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,467 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,467 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,468 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:36,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:36,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:36,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:36,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 16:12:36,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,475 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,475 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,475 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,475 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 16:12:36,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:36,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 16:12:36,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 16:12:36,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 16:12:36,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-09-24 16:12:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,484 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,484 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,484 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,484 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 16:12:36,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:36,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 16:12:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:36,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 16:12:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,507 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,507 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,508 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,508 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 16:12:36,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 16:12:36,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 16:12:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 16:12:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 16:12:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:36,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-09-24 16:12:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 16:12:36,539 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 16:12:36,539 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 16:12:36,539 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 16:12:36,540 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 16:12:36,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 16:12:36,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 16:12:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 16:12:36,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 16:12:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 16:12:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 16:12:36,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 16:12:36,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 16:12:36,589 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-24 16:12:36,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730309883] [2020-09-24 16:12:36,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 16:12:36,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 16:12:36,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611761268] [2020-09-24 16:12:36,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 16:12:36,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 16:12:36,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 16:12:36,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-24 16:12:36,591 INFO L87 Difference]: Start difference. First operand 200 states and 225 transitions. Second operand 14 states. [2020-09-24 16:12:37,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 16:12:37,995 INFO L93 Difference]: Finished difference Result 336 states and 377 transitions. [2020-09-24 16:12:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 16:12:37,996 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 124 [2020-09-24 16:12:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 16:12:37,999 INFO L225 Difference]: With dead ends: 336 [2020-09-24 16:12:37,999 INFO L226 Difference]: Without dead ends: 211 [2020-09-24 16:12:38,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2020-09-24 16:12:38,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-24 16:12:38,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 202. [2020-09-24 16:12:38,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-24 16:12:38,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 229 transitions. [2020-09-24 16:12:38,018 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 229 transitions. Word has length 124 [2020-09-24 16:12:38,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 16:12:38,019 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 229 transitions. [2020-09-24 16:12:38,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 16:12:38,019 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 229 transitions. [2020-09-24 16:12:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 16:12:38,022 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 16:12:38,022 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 1] [2020-09-24 16:12:38,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 16:12:38,023 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 16:12:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 16:12:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1025407455, now seen corresponding path program 1 times [2020-09-24 16:12:38,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 16:12:38,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653364218] [2020-09-24 16:12:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 16:12:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 16:12:38,082 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 16:12:38,083 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 16:12:38,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 16:12:38,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 04:12:38 BoogieIcfgContainer [2020-09-24 16:12:38,116 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 16:12:38,119 INFO L168 Benchmark]: Toolchain (without parser) took 10837.19 ms. Allocated memory was 147.8 MB in the beginning and 349.2 MB in the end (delta: 201.3 MB). Free memory was 103.2 MB in the beginning and 190.3 MB in the end (delta: -87.1 MB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:38,120 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 16:12:38,121 INFO L168 Benchmark]: CACSL2BoogieTranslator took 502.43 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 102.5 MB in the beginning and 179.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:38,122 INFO L168 Benchmark]: Boogie Preprocessor took 69.14 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:38,123 INFO L168 Benchmark]: RCFGBuilder took 731.73 ms. Allocated memory is still 202.9 MB. Free memory was 176.3 MB in the beginning and 132.9 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:38,124 INFO L168 Benchmark]: TraceAbstraction took 9517.16 ms. Allocated memory was 202.9 MB in the beginning and 349.2 MB in the end (delta: 146.3 MB). Free memory was 132.3 MB in the beginning and 190.3 MB in the end (delta: -58.0 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. [2020-09-24 16:12:38,128 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 502.43 ms. Allocated memory was 147.8 MB in the beginning and 202.9 MB in the end (delta: 55.1 MB). Free memory was 102.5 MB in the beginning and 179.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.14 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 731.73 ms. Allocated memory is still 202.9 MB. Free memory was 176.3 MB in the beginning and 132.9 MB in the end (delta: 43.4 MB). Peak memory consumption was 43.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9517.16 ms. Allocated memory was 202.9 MB in the beginning and 349.2 MB in the end (delta: 146.3 MB). Free memory was 132.3 MB in the beginning and 190.3 MB in the end (delta: -58.0 MB). Peak memory consumption was 88.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 14]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L103] CALL, EXPR nondet_tree() [L23] COND FALSE !(__VERIFIER_nondet_bool()) [L26] struct node *n = (struct node *)malloc(sizeof(struct node)); [L27] n->data = __VERIFIER_nondet_int() [L28] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L28] RET, EXPR nondet_tree() [L28] n->left = nondet_tree() [L29] CALL, EXPR nondet_tree() [L23] COND TRUE __VERIFIER_nondet_bool() [L24] return 0; [L29] RET, EXPR nondet_tree() [L29] n->right = nondet_tree() [L30] return n; [L103] RET, EXPR nondet_tree() [L103] CALL task(nondet_tree()) [L81] CALL, EXPR min(t) [L35] COND FALSE !(!n) [L38] EXPR n->left [L38] CALL, EXPR min(n->left) [L35] COND TRUE !n [L36] return 2147483647; [L38] RET, EXPR min(n->left) [L38] int a = min(n->left); [L39] EXPR n->right [L39] CALL, EXPR min(n->right) [L35] COND TRUE !n [L36] return 2147483647; [L39] RET, EXPR min(n->right) [L39] int b = min(n->right); [L40] COND TRUE a <= b [L40] return a; [L81] RET, EXPR min(t) [L81] int a = min(t); [L82] int b; [L84] CALL, EXPR size(t) [L76] COND FALSE !(!t) [L77] EXPR t->left [L77] CALL, EXPR size(t->left) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->left) [L77] EXPR t->right [L77] CALL, EXPR size(t->right) [L76] COND TRUE !t [L76] return 0; [L77] RET, EXPR size(t->right) [L77] return size(t->left) + size(t->right) + 1; [L84] RET, EXPR size(t) [L84] int n = size(t); [L85] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L85] RET assume_abort_if_not(n != 0) [L86] EXPR, FCALL calloc(n, sizeof(int)) [L86] int *x = calloc(n, sizeof(int)); [L87] CALL tree_inorder(t, x, n) [L65] COND FALSE !(!t) [L68] EXPR t->left [L68] CALL, EXPR tree_inorder(t->left, a, i) [L65] COND TRUE !t [L66] return i; [L68] RET, EXPR tree_inorder(t->left, a, i) [L68] i = tree_inorder(t->left, a, i) [L69] EXPR i++ [L69] EXPR t->data [L69] a[i++] = t->data [L70] EXPR t->right [L70] CALL, EXPR tree_inorder(t->right, a, i) [L65] COND TRUE !t [L66] return i; [L70] RET, EXPR tree_inorder(t->right, a, i) [L70] i = tree_inorder(t->right, a, i) [L71] return i; [L87] RET tree_inorder(t, x, n) [L88] EXPR x[0] [L88] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 199 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.3s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 876 SDtfs, 2057 SDslu, 2560 SDs, 0 SdLazy, 5108 SolverSat, 702 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 58 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 645 NumberOfCodeBlocks, 645 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 115301 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 109/111 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...