/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 enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_rec_incorrect.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 06:38:29,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 06:38:29,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 06:38:29,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 06:38:29,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 06:38:29,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 06:38:29,911 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 06:38:29,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 06:38:29,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 06:38:29,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 06:38:29,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 06:38:29,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 06:38:29,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 06:38:29,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 06:38:29,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 06:38:29,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 06:38:29,922 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 06:38:29,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 06:38:29,925 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 06:38:29,927 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 06:38:29,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 06:38:29,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 06:38:29,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 06:38:29,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 06:38:29,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 06:38:29,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 06:38:29,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 06:38:29,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 06:38:29,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 06:38:29,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 06:38:29,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 06:38:29,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 06:38:29,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 06:38:29,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 06:38:29,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 06:38:29,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 06:38:29,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 06:38:29,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 06:38:29,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 06:38:29,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 06:38:29,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 06:38:29,947 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 [2020-09-25 06:38:29,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 06:38:29,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 06:38:29,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 06:38:29,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 06:38:29,976 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 06:38:29,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 06:38:29,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 06:38:29,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 06:38:29,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 06:38:29,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 06:38:29,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 06:38:29,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 06:38:29,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 06:38:29,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 06:38:29,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 06:38:29,978 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 06:38:29,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 06:38:29,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 06:38:29,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 06:38:29,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 06:38:29,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 06:38:29,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 06:38:29,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 06:38:29,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 06:38:29,980 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 06:38:29,980 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 06:38:29,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 06:38:29,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 06:38:29,981 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 06:38:29,981 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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;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;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-09-25 06:38:30,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 06:38:30,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 06:38:30,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 06:38:30,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 06:38:30,464 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 06:38:30,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-25 06:38:30,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8565f319/f18d8cb3971f4c8a806dba1f57ebb5fb/FLAG5837dd89d [2020-09-25 06:38:31,151 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 06:38:31,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/verifythis/tree_del_rec_incorrect.c [2020-09-25 06:38:31,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8565f319/f18d8cb3971f4c8a806dba1f57ebb5fb/FLAG5837dd89d [2020-09-25 06:38:31,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e8565f319/f18d8cb3971f4c8a806dba1f57ebb5fb [2020-09-25 06:38:31,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 06:38:31,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 06:38:31,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 06:38:31,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 06:38:31,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 06:38:31,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:31,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72e3fcd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31, skipping insertion in model container [2020-09-25 06:38:31,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:31,512 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 06:38:31,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 06:38:31,770 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 06:38:31,772 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 06:38:31,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:38:31,809 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 06:38:31,831 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 06:38:31,832 WARN L1484 CHandler]: Possible shadowing of function min [2020-09-25 06:38:31,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 06:38:31,955 INFO L208 MainTranslator]: Completed translation [2020-09-25 06:38:31,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31 WrapperNode [2020-09-25 06:38:31,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 06:38:31,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 06:38:31,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 06:38:31,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 06:38:31,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:31,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:31,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:31,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:32,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:32,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:32,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (1/1) ... [2020-09-25 06:38:32,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 06:38:32,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 06:38:32,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 06:38:32,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 06:38:32,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (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 [2020-09-25 06:38:32,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 06:38:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 06:38:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 06:38:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 06:38:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_tree [2020-09-25 06:38:32,103 INFO L138 BoogieDeclarations]: Found implementation of procedure min [2020-09-25 06:38:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_del [2020-09-25 06:38:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure tree_inorder [2020-09-25 06:38:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure size [2020-09-25 06:38:32,104 INFO L138 BoogieDeclarations]: Found implementation of procedure task [2020-09-25 06:38:32,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 06:38:32,105 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-25 06:38:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 06:38:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 06:38:32,105 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 06:38:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 06:38:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 06:38:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 06:38:32,106 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 06:38:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 06:38:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 06:38:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_tree [2020-09-25 06:38:32,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 06:38:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 06:38:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 06:38:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure min [2020-09-25 06:38:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 06:38:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure tree_del [2020-09-25 06:38:32,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 06:38:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 06:38:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure tree_inorder [2020-09-25 06:38:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure size [2020-09-25 06:38:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure task [2020-09-25 06:38:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 06:38:32,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-25 06:38:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 06:38:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 06:38:32,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 06:38:32,731 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 06:38:32,731 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 06:38:32,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:38:32 BoogieIcfgContainer [2020-09-25 06:38:32,740 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 06:38:32,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 06:38:32,742 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 06:38:32,746 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 06:38:32,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 06:38:31" (1/3) ... [2020-09-25 06:38:32,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7600f6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:38:32, skipping insertion in model container [2020-09-25 06:38:32,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 06:38:31" (2/3) ... [2020-09-25 06:38:32,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7600f6d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 06:38:32, skipping insertion in model container [2020-09-25 06:38:32,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 06:38:32" (3/3) ... [2020-09-25 06:38:32,751 INFO L109 eAbstractionObserver]: Analyzing ICFG tree_del_rec_incorrect.c [2020-09-25 06:38:32,763 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 06:38:32,776 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 06:38:32,800 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 06:38:32,837 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 06:38:32,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 06:38:32,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 06:38:32,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 06:38:32,838 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 06:38:32,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 06:38:32,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 06:38:32,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 06:38:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states. [2020-09-25 06:38:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-25 06:38:32,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:32,884 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] [2020-09-25 06:38:32,885 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:32,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:32,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1242734485, now seen corresponding path program 1 times [2020-09-25 06:38:32,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:32,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857538440] [2020-09-25 06:38:32,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 06:38:33,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:33,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-25 06:38:33,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:38:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 06:38:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 06:38:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 06:38:33,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:33,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:33,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 06:38:33,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:33,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:33,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:38:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:33,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:33,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 06:38:33,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:33,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:33,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:33,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:38:33,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:33,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:33,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:33,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:33,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:33,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:38:33,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:33,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:34,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:38:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:34,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:38:34,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:38:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:34,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:38:34,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:34,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 06:38:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:38:34,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 06:38:34,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:38:34,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:34,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:38:34,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 06:38:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:38:34,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:38:34,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:34,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 06:38:34,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:34,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:34,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 06:38:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:34,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:34,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:34,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:38:34,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:34,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:38:34,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:34,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:34,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 06:38:34,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:34,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:34,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 06:38:34,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857538440] [2020-09-25 06:38:34,218 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 06:38:34,218 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 06:38:34,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631354176] [2020-09-25 06:38:34,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:38:34,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:34,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:38:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:38:34,252 INFO L87 Difference]: Start difference. First operand 183 states. Second operand 11 states. [2020-09-25 06:38:35,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:35,567 INFO L93 Difference]: Finished difference Result 324 states and 379 transitions. [2020-09-25 06:38:35,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 06:38:35,570 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-09-25 06:38:35,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:35,589 INFO L225 Difference]: With dead ends: 324 [2020-09-25 06:38:35,590 INFO L226 Difference]: Without dead ends: 188 [2020-09-25 06:38:35,597 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 [2020-09-25 06:38:35,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-25 06:38:35,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 175. [2020-09-25 06:38:35,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-09-25 06:38:35,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 198 transitions. [2020-09-25 06:38:35,695 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 198 transitions. Word has length 60 [2020-09-25 06:38:35,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:35,696 INFO L479 AbstractCegarLoop]: Abstraction has 175 states and 198 transitions. [2020-09-25 06:38:35,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:38:35,697 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 198 transitions. [2020-09-25 06:38:35,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 06:38:35,707 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:35,708 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] [2020-09-25 06:38:35,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 06:38:35,708 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:35,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:35,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1686429873, now seen corresponding path program 1 times [2020-09-25 06:38:35,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:35,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017045593] [2020-09-25 06:38:35,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:35,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:36,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 06:38:40,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:38:40,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4274 [2020-09-25 06:38:40,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:38:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 06:38:40,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 06:38:40,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:40,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:40,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:40,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:38:40,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:40,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:40,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:38:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:40,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:38:40,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:40,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:40,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:38:40,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:40,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:38:40,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:40,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:40,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:40,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:38:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:38:40,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 06:38:40,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:38:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:40,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 06:38:40,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:40,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:38:40,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:40,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:38:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:38:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:40,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 06:38:40,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:40,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:38:40,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 06:38:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:38:40,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 06:38:40,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:38:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 06:38:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:38:40,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:38:40,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:40,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:38:40,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 06:38:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:40,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:40,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:40,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:38:40,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:40,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 06:38:40,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:40,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:38:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:40,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:40,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 06:38:40,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017045593] [2020-09-25 06:38:40,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:40,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:38:40,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501207675] [2020-09-25 06:38:40,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:38:40,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:40,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:38:40,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:38:40,387 INFO L87 Difference]: Start difference. First operand 175 states and 198 transitions. Second operand 11 states. [2020-09-25 06:38:41,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:41,568 INFO L93 Difference]: Finished difference Result 299 states and 341 transitions. [2020-09-25 06:38:41,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:38:41,568 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 80 [2020-09-25 06:38:41,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:41,572 INFO L225 Difference]: With dead ends: 299 [2020-09-25 06:38:41,572 INFO L226 Difference]: Without dead ends: 190 [2020-09-25 06:38:41,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:38:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-25 06:38:41,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 179. [2020-09-25 06:38:41,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 06:38:41,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 202 transitions. [2020-09-25 06:38:41,597 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 202 transitions. Word has length 80 [2020-09-25 06:38:41,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:41,597 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 202 transitions. [2020-09-25 06:38:41,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:38:41,598 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 202 transitions. [2020-09-25 06:38:41,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 06:38:41,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:41,603 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2020-09-25 06:38:41,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 06:38:41,603 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:41,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1483717926, now seen corresponding path program 1 times [2020-09-25 06:38:41,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:41,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867101220] [2020-09-25 06:38:41,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:41,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:41,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:41,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:42,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-25 06:38:46,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 06:38:46,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 06:38:46,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 06:38:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 06:38:46,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 06:38:46,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:46,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:46,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:38:46,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:46,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:38:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:46,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:46,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 06:38:46,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 06:38:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:38:46,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:38:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:46,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:46,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 06:38:46,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:46,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 06:38:46,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 06:38:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:38:46,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:46,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-25 06:38:46,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:46,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:46,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:46,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:46,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:38:46,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:46,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:46,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:46,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:38:46,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:46,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:46,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:38:46,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:46,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 06:38:46,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-25 06:38:46,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:46,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:46,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:46,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:38:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:46,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:38:46,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:46,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:38:46,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:47,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-09-25 06:38:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:47,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:47,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:47,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:38:47,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:47,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:38:47,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:47,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:47,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:47,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:38:47,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:47,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 06:38:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:47,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:47,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:38:47,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:47,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 06:38:47,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:47,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:38:47,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:47,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:38:47,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:38:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:47,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:47,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:38:47,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:47,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:38:47,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:47,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:47,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:47,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:38:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:47,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:47,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:47,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:38:47,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:38:47,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:47,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:47,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:47,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:47,389 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 06:38:47,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867101220] [2020-09-25 06:38:47,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:47,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 06:38:47,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59825666] [2020-09-25 06:38:47,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 06:38:47,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:47,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 06:38:47,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-25 06:38:47,396 INFO L87 Difference]: Start difference. First operand 179 states and 202 transitions. Second operand 12 states. [2020-09-25 06:38:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:48,748 INFO L93 Difference]: Finished difference Result 318 states and 361 transitions. [2020-09-25 06:38:48,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 06:38:48,753 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 112 [2020-09-25 06:38:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:48,760 INFO L225 Difference]: With dead ends: 318 [2020-09-25 06:38:48,761 INFO L226 Difference]: Without dead ends: 189 [2020-09-25 06:38:48,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-09-25 06:38:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-25 06:38:48,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 181. [2020-09-25 06:38:48,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-09-25 06:38:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 205 transitions. [2020-09-25 06:38:48,810 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 205 transitions. Word has length 112 [2020-09-25 06:38:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:48,811 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 205 transitions. [2020-09-25 06:38:48,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 06:38:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 205 transitions. [2020-09-25 06:38:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 06:38:48,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:48,814 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1] [2020-09-25 06:38:48,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 06:38:48,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:48,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:48,816 INFO L82 PathProgramCache]: Analyzing trace with hash -613428745, now seen corresponding path program 1 times [2020-09-25 06:38:48,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:48,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143205780] [2020-09-25 06:38:48,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:48,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:48,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:48,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:53,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:53,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 06:38:53,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 06:38:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 06:38:53,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:53,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 06:38:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 06:38:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 06:38:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:53,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 06:38:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:53,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:53,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:53,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:53,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:53,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:38:53,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:53,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:53,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:53,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:53,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:38:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:53,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:53,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:53,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 06:38:53,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 06:38:53,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:53,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:53,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:53,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:53,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 06:38:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:53,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:53,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:53,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:53,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:38:53,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:53,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:53,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:53,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:53,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-25 06:38:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:53,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:53,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:53,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:53,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 06:38:53,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:53,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:53,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:53,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:53,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 06:38:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 06:38:54,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:38:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:54,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 06:38:54,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 06:38:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 06:38:54,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 06:38:54,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-25 06:38:54,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:54,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 06:38:54,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 06:38:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:54,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:54,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 06:38:54,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:54,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:54,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 06:38:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 06:38:54,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:54,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 06:38:54,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 06:38:54,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:54,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 06:38:54,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-09-25 06:38:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 06:38:54,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:54,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:38:54,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:54,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 06:38:54,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-25 06:38:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 06:38:54,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 06:38:54,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:54,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:54,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 06:38:54,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 06:38:54,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 06:38:54,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:54,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 06:38:54,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 06:38:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 06:38:54,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 06:38:54,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 06:38:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:38:54,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:54,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 06:38:54,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:54,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-25 06:38:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 06:38:54,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 06:38:54,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 06:38:54,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 06:38:54,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 06:38:54,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 06:38:54,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 06:38:54,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-09-25 06:38:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 06:38:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 06:38:54,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 06:38:54,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 06:38:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 06:38:54,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143205780] [2020-09-25 06:38:54,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 06:38:54,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 06:38:54,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660516441] [2020-09-25 06:38:54,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 06:38:54,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 06:38:54,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 06:38:54,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-25 06:38:54,505 INFO L87 Difference]: Start difference. First operand 181 states and 205 transitions. Second operand 11 states. [2020-09-25 06:38:55,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 06:38:55,741 INFO L93 Difference]: Finished difference Result 317 states and 360 transitions. [2020-09-25 06:38:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 06:38:55,742 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 133 [2020-09-25 06:38:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 06:38:55,745 INFO L225 Difference]: With dead ends: 317 [2020-09-25 06:38:55,745 INFO L226 Difference]: Without dead ends: 191 [2020-09-25 06:38:55,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 06:38:55,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-09-25 06:38:55,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 183. [2020-09-25 06:38:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-25 06:38:55,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 208 transitions. [2020-09-25 06:38:55,772 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 208 transitions. Word has length 133 [2020-09-25 06:38:55,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 06:38:55,773 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 208 transitions. [2020-09-25 06:38:55,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 06:38:55,773 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 208 transitions. [2020-09-25 06:38:55,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 06:38:55,778 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 06:38:55,778 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] [2020-09-25 06:38:55,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 06:38:55,779 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 06:38:55,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 06:38:55,779 INFO L82 PathProgramCache]: Analyzing trace with hash -435645933, now seen corresponding path program 1 times [2020-09-25 06:38:55,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 06:38:55,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390066274] [2020-09-25 06:38:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 06:38:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 06:38:55,828 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 06:38:55,829 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 06:38:55,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 06:38:55,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 06:38:55 BoogieIcfgContainer [2020-09-25 06:38:55,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 06:38:55,878 INFO L168 Benchmark]: Toolchain (without parser) took 24390.44 ms. Allocated memory was 137.4 MB in the beginning and 440.9 MB in the end (delta: 303.6 MB). Free memory was 100.0 MB in the beginning and 259.1 MB in the end (delta: -159.1 MB). Peak memory consumption was 144.5 MB. Max. memory is 7.1 GB. [2020-09-25 06:38:55,878 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 06:38:55,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 464.93 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.4 MB in the beginning and 178.1 MB in the end (delta: -78.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-25 06:38:55,880 INFO L168 Benchmark]: Boogie Preprocessor took 64.32 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 174.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-09-25 06:38:55,881 INFO L168 Benchmark]: RCFGBuilder took 718.38 ms. Allocated memory is still 200.3 MB. Free memory was 174.9 MB in the beginning and 134.7 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-09-25 06:38:55,882 INFO L168 Benchmark]: TraceAbstraction took 23132.54 ms. Allocated memory was 200.3 MB in the beginning and 440.9 MB in the end (delta: 240.6 MB). Free memory was 134.0 MB in the beginning and 259.1 MB in the end (delta: -125.1 MB). Peak memory consumption was 115.6 MB. Max. memory is 7.1 GB. [2020-09-25 06:38:55,886 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 464.93 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 99.4 MB in the beginning and 178.1 MB in the end (delta: -78.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.32 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 174.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 718.38 ms. Allocated memory is still 200.3 MB. Free memory was 174.9 MB in the beginning and 134.7 MB in the end (delta: 40.1 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23132.54 ms. Allocated memory was 200.3 MB in the beginning and 440.9 MB in the end (delta: 240.6 MB). Free memory was 134.0 MB in the beginning and 259.1 MB in the end (delta: -125.1 MB). Peak memory consumption was 115.6 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: [L96] 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; [L96] RET, EXPR nondet_tree() [L96] CALL task(nondet_tree()) [L74] 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; [L74] RET, EXPR min(t) [L74] int a = min(t); [L75] int b; [L77] CALL, EXPR size(t) [L69] COND FALSE !(!t) [L70] EXPR t->left [L70] CALL, EXPR size(t->left) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->left) [L70] EXPR t->right [L70] CALL, EXPR size(t->right) [L69] COND TRUE !t [L69] return 0; [L70] RET, EXPR size(t->right) [L70] return size(t->left) + size(t->right) + 1; [L77] RET, EXPR size(t) [L77] int n = size(t); [L78] CALL assume_abort_if_not(n != 0) [L10] COND FALSE !(!cond) [L78] RET assume_abort_if_not(n != 0) [L79] EXPR, FCALL calloc(n, sizeof(int)) [L79] int *x = calloc(n, sizeof(int)); [L80] CALL tree_inorder(t, x, n) [L58] COND FALSE !(!t) [L61] EXPR t->left [L61] CALL, EXPR tree_inorder(t->left, a, i) [L58] COND TRUE !t [L59] return i; [L61] RET, EXPR tree_inorder(t->left, a, i) [L61] i = tree_inorder(t->left, a, i) [L62] EXPR i++ [L62] EXPR t->data [L62] a[i++] = t->data [L63] EXPR t->right [L63] CALL, EXPR tree_inorder(t->right, a, i) [L58] COND TRUE !t [L59] return i; [L63] RET, EXPR tree_inorder(t->right, a, i) [L63] i = tree_inorder(t->right, a, i) [L64] return i; [L80] RET tree_inorder(t, x, n) [L81] EXPR x[0] [L81] CALL __VERIFIER_assert(a == x[0]) [L14] COND TRUE !cond [L14] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.0s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 660 SDtfs, 1280 SDslu, 1829 SDs, 0 SdLazy, 2984 SolverSat, 531 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, 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, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.0s InterpolantComputationTime, 541 NumberOfCodeBlocks, 541 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 381 ConstructedInterpolants, 0 QuantifiedInterpolants, 216169 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 74/88 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...