/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/list_search-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:11:03,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:11:03,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:11:03,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:11:03,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:11:03,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:11:03,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:11:03,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:11:03,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:11:03,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:11:03,100 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:11:03,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:11:03,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:11:03,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:11:03,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:11:03,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:11:03,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:11:03,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:11:03,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:11:03,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:11:03,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:11:03,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:11:03,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:11:03,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:11:03,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:11:03,138 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:11:03,138 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:11:03,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:11:03,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:11:03,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:11:03,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:11:03,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:11:03,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:11:03,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:11:03,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:11:03,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:11:03,147 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:11:03,147 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:11:03,147 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:11:03,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:11:03,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:11:03,151 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 11:11:03,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:11:03,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:11:03,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:11:03,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:11:03,201 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:11:03,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:11:03,202 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:11:03,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:11:03,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:11:03,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:11:03,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:11:03,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:11:03,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:11:03,205 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:11:03,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:11:03,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:11:03,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:11:03,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:11:03,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:11:03,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:11:03,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:11:03,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:11:03,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:11:03,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:11:03,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:11:03,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:11:03,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:11:03,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:11:03,208 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:11:03,208 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:11:03,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:11:03,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:11:03,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:11:03,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:11:03,730 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:11:03,731 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 11:11:03,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bdaf3f8c/49a0b38be4ba4479934aa87d606db8dc/FLAG146b11f1d [2020-09-25 11:11:04,462 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:11:04,463 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_search-1.i [2020-09-25 11:11:04,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bdaf3f8c/49a0b38be4ba4479934aa87d606db8dc/FLAG146b11f1d [2020-09-25 11:11:04,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5bdaf3f8c/49a0b38be4ba4479934aa87d606db8dc [2020-09-25 11:11:04,740 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:11:04,746 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:11:04,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:11:04,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:11:04,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:11:04,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75024412 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:04, skipping insertion in model container [2020-09-25 11:11:04,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:11:04" (1/1) ... [2020-09-25 11:11:04,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:11:04,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:11:05,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:11:05,339 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:11:05,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:11:05,480 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:11:05,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05 WrapperNode [2020-09-25 11:11:05,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:11:05,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:11:05,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:11:05,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:11:05,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (1/1) ... [2020-09-25 11:11:05,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (1/1) ... [2020-09-25 11:11:05,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (1/1) ... [2020-09-25 11:11:05,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (1/1) ... [2020-09-25 11:11:05,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (1/1) ... [2020-09-25 11:11:05,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (1/1) ... [2020-09-25 11:11:05,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (1/1) ... [2020-09-25 11:11:05,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:11:05,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:11:05,561 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:11:05,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:11:05,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (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 11:11:05,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:11:05,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:11:05,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:11:05,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 11:11:05,642 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 11:11:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-25 11:11:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-25 11:11:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-25 11:11:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2020-09-25 11:11:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2020-09-25 11:11:05,643 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:11:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:11:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:11:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 11:11:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 11:11:05,644 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 11:11:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 11:11:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 11:11:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 11:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 11:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 11:11:05,646 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 11:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 11:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 11:11:05,647 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 11:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 11:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 11:11:05,648 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 11:11:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 11:11:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 11:11:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 11:11:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-25 11:11:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-25 11:11:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-25 11:11:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 11:11:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 11:11:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 11:11:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 11:11:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 11:11:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 11:11:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 11:11:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 11:11:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 11:11:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 11:11:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 11:11:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 11:11:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 11:11:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 11:11:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 11:11:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 11:11:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 11:11:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 11:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 11:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 11:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 11:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 11:11:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 11:11:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 11:11:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 11:11:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 11:11:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 11:11:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 11:11:05,654 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 11:11:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 11:11:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 11:11:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 11:11:05,655 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 11:11:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 11:11:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 11:11:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 11:11:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 11:11:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 11:11:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 11:11:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 11:11:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 11:11:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 11:11:05,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 11:11:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 11:11:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 11:11:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 11:11:05,660 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:11:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 11:11:05,661 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 11:11:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 11:11:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 11:11:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 11:11:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 11:11:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 11:11:05,662 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 11:11:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 11:11:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 11:11:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 11:11:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 11:11:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 11:11:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 11:11:05,663 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 11:11:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 11:11:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 11:11:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 11:11:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 11:11:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 11:11:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 11:11:05,664 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 11:11:05,665 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 11:11:05,665 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 11:11:05,665 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 11:11:05,665 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 11:11:05,665 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 11:11:05,665 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 11:11:05,665 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 11:11:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 11:11:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 11:11:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 11:11:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 11:11:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 11:11:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 11:11:05,666 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 11:11:05,667 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 11:11:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 11:11:05,668 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 11:11:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2020-09-25 11:11:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 11:11:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 11:11:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2020-09-25 11:11:05,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 11:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 11:11:05,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 11:11:05,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:11:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 11:11:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:11:05,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:11:06,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:11:06,258 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-25 11:11:06,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:11:06 BoogieIcfgContainer [2020-09-25 11:11:06,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:11:06,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:11:06,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:11:06,269 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:11:06,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:11:04" (1/3) ... [2020-09-25 11:11:06,270 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5213d55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:11:06, skipping insertion in model container [2020-09-25 11:11:06,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:11:05" (2/3) ... [2020-09-25 11:11:06,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5213d55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:11:06, skipping insertion in model container [2020-09-25 11:11:06,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:11:06" (3/3) ... [2020-09-25 11:11:06,274 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-1.i [2020-09-25 11:11:06,286 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:11:06,297 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:11:06,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:11:06,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:11:06,355 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:11:06,355 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:11:06,355 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:11:06,355 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:11:06,356 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:11:06,356 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:11:06,356 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:11:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-25 11:11:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 11:11:06,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:06,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:06,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:06,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:06,406 INFO L82 PathProgramCache]: Analyzing trace with hash 42223880, now seen corresponding path program 1 times [2020-09-25 11:11:06,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:06,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545319200] [2020-09-25 11:11:06,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:06,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:07,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:07,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:11,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:11,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 11:11:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:11:11,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:11:11,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:11,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:11,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:11:11,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 11:11:11,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:11:11,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:11:11,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:11,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:11,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:11,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:11:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:11:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:11,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:11,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:11:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:11,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:11,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:11,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:11,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:11,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:11:11,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:11,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:11,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:11,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:11,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:11,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:11:11,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:11,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:11,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:11,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:11,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:11,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 11:11:11,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:11,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:11,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:11,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:11,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-25 11:11:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:11,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:11,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:11,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:11,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:11,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-25 11:11:11,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:11,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:11:11,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:11,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:11:11,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:12,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 11:11:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:12,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:12,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:12,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 11:11:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:12,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:11:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:11:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:11:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 11:11:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:12,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:12,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:12,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:11:12,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:11:12,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:11:12,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:12,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:12,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 11:11:12,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:12,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 11:11:12,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545319200] [2020-09-25 11:11:12,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:11:12,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:11:12,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638741425] [2020-09-25 11:11:12,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:11:12,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:12,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:11:12,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:11:12,241 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 9 states. [2020-09-25 11:11:13,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:13,081 INFO L93 Difference]: Finished difference Result 187 states and 225 transitions. [2020-09-25 11:11:13,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:11:13,084 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-09-25 11:11:13,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:13,099 INFO L225 Difference]: With dead ends: 187 [2020-09-25 11:11:13,100 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 11:11:13,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:11:13,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 11:11:13,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 73. [2020-09-25 11:11:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 11:11:13,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2020-09-25 11:11:13,181 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 82 [2020-09-25 11:11:13,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:13,182 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2020-09-25 11:11:13,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 11:11:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2020-09-25 11:11:13,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 11:11:13,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:13,189 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:13,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:11:13,190 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:13,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:13,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1050718625, now seen corresponding path program 1 times [2020-09-25 11:11:13,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:13,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195317047] [2020-09-25 11:11:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:13,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:13,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:14,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 11:11:14,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:11:14,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-09-25 11:11:14,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:14,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:11:14,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-25 11:11:14,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:11:14,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:14,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:11:14,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:14,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:11:14,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:14,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:14,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:14,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:14,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:11:14,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:11:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:14,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:14,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:14,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:11:14,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:14,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:14,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:14,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:14,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:11:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:14,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:14,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 11:11:14,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:14,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:14,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:14,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:14,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:11:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:14,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:14,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:14,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:11:14,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:14,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:14,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:14,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:11:14,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 11:11:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:14,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:14,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:14,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:14,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 11:11:14,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:14,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:14,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:11:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:14,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:11:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:11:14,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 11:11:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:14,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:14,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:14,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:14,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:11:14,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 11:11:14,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:14,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:14,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:11:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 11:11:14,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:11:14,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:11:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-25 11:11:14,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195317047] [2020-09-25 11:11:14,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:14,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 11:11:14,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699906352] [2020-09-25 11:11:14,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:11:14,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:14,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:11:14,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:11:14,815 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 10 states. [2020-09-25 11:11:15,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:15,475 INFO L93 Difference]: Finished difference Result 113 states and 121 transitions. [2020-09-25 11:11:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 11:11:15,476 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-09-25 11:11:15,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:15,480 INFO L225 Difference]: With dead ends: 113 [2020-09-25 11:11:15,480 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 11:11:15,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2020-09-25 11:11:15,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 11:11:15,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2020-09-25 11:11:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-09-25 11:11:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 80 transitions. [2020-09-25 11:11:15,493 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 80 transitions. Word has length 89 [2020-09-25 11:11:15,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:15,494 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 80 transitions. [2020-09-25 11:11:15,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:11:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 80 transitions. [2020-09-25 11:11:15,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 11:11:15,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:15,497 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:15,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:11:15,497 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:15,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1346991358, now seen corresponding path program 1 times [2020-09-25 11:11:15,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:15,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48749822] [2020-09-25 11:11:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:15,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:15,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:16,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:16,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-25 11:11:16,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:16,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-09-25 11:11:16,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:16,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:11:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-09-25 11:11:16,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 11:11:16,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:16,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:16,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:16,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:11:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:11:16,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:16,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:16,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:16,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:16,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:11:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:16,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:16,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:16,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:16,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:11:16,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:16,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:16,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:11:16,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:16,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:16,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:16,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:16,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:11:16,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:16,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:16,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:16,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:11:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:16,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:16,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:16,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 11:11:16,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:16,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:16,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 11:11:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:16,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:16,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:16,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:16,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:16,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 11:11:16,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:16,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:11:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:16,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:11:16,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:16,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 11:11:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:16,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:17,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:17,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 11:11:17,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:17,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 11:11:17,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:17,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:11:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:11:17,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 11:11:17,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 11:11:17,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48749822] [2020-09-25 11:11:17,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:11:17,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 11:11:17,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670536763] [2020-09-25 11:11:17,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:11:17,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:17,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:11:17,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:11:17,153 INFO L87 Difference]: Start difference. First operand 75 states and 80 transitions. Second operand 13 states. [2020-09-25 11:11:17,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:17,915 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2020-09-25 11:11:17,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:11:17,916 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 11:11:17,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:17,917 INFO L225 Difference]: With dead ends: 95 [2020-09-25 11:11:17,918 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 11:11:17,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2020-09-25 11:11:17,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 11:11:17,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 78. [2020-09-25 11:11:17,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 11:11:17,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2020-09-25 11:11:17,928 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 91 [2020-09-25 11:11:17,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:17,929 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2020-09-25 11:11:17,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:11:17,929 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2020-09-25 11:11:17,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 11:11:17,931 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:17,931 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-09-25 11:11:17,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:11:17,931 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:17,932 INFO L82 PathProgramCache]: Analyzing trace with hash 2140447576, now seen corresponding path program 1 times [2020-09-25 11:11:17,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:17,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734677039] [2020-09-25 11:11:17,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:17,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:18,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:18,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:19,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:20,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:22,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:22,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:11:22,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:11:22,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 11:11:22,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:22,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:22,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 11:11:22,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 11:11:22,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 11:11:22,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:23,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:23,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:23,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:11:23,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:23,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:11:23,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:23,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:23,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:23,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:11:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:23,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:23,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:23,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:23,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:11:23,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:23,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:23,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:23,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:23,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:11:23,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:23,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:23,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:23,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:23,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:11:23,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:23,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:23,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:23,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:23,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:11:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:23,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:23,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:23,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:23,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:23,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 11:11:23,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:23,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:11:23,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:23,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:11:23,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:23,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 11:11:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:23,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:23,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:23,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:23,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:23,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 11:11:23,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:23,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:11:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:11:23,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:11:23,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:24,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 11:11:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:24,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:24,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:11:24,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 11:11:24,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:24,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:11:24,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:24,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:11:24,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 39 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 11:11:24,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734677039] [2020-09-25 11:11:24,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:11:24,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 11:11:24,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804829526] [2020-09-25 11:11:24,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 11:11:24,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:24,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 11:11:24,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=645, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:11:24,494 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 27 states. [2020-09-25 11:11:24,820 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-25 11:11:26,055 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-09-25 11:11:26,678 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-09-25 11:11:28,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:28,388 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2020-09-25 11:11:28,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 11:11:28,388 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 99 [2020-09-25 11:11:28,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:28,391 INFO L225 Difference]: With dead ends: 121 [2020-09-25 11:11:28,391 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 11:11:28,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 451 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=324, Invalid=2756, Unknown=0, NotChecked=0, Total=3080 [2020-09-25 11:11:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 11:11:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 88. [2020-09-25 11:11:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-25 11:11:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2020-09-25 11:11:28,403 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 99 [2020-09-25 11:11:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:28,404 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2020-09-25 11:11:28,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 11:11:28,404 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2020-09-25 11:11:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 11:11:28,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:28,406 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-09-25 11:11:28,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:11:28,407 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:28,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:28,407 INFO L82 PathProgramCache]: Analyzing trace with hash -891812434, now seen corresponding path program 2 times [2020-09-25 11:11:28,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:28,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [872757552] [2020-09-25 11:11:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:28,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:29,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:30,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:33,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:33,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 11:11:33,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:11:33,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:11:33,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:33,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 11:11:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-09-25 11:11:33,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 11:11:33,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:33,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:33,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:33,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:11:33,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:11:33,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:33,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:33,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:33,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:11:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:33,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:33,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:33,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:33,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:33,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:11:33,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:33,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:33,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:33,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:11:33,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:11:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:33,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:33,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:33,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:33,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 11:11:33,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:33,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:11:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:33,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 11:11:33,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:33,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:11:33,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:33,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:33,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:33,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:33,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:33,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 11:11:33,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:33,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:11:33,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:11:33,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:11:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 11:11:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:34,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:34,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:34,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:34,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-09-25 11:11:34,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:34,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:11:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:11:34,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:11:34,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:11:34,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 11:11:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:34,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:34,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:34,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:34,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 11:11:34,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:11:34,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 11:11:34,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:34,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:11:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 11:11:34,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:11:34,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:11:35,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [872757552] [2020-09-25 11:11:35,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:11:35,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 11:11:35,151 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610515635] [2020-09-25 11:11:35,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 11:11:35,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:35,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 11:11:35,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-09-25 11:11:35,154 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand 27 states. [2020-09-25 11:11:38,058 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2020-09-25 11:11:38,222 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-09-25 11:11:38,514 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-09-25 11:11:38,741 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2020-09-25 11:11:39,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:39,550 INFO L93 Difference]: Finished difference Result 161 states and 169 transitions. [2020-09-25 11:11:39,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-09-25 11:11:39,550 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 107 [2020-09-25 11:11:39,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:39,555 INFO L225 Difference]: With dead ends: 161 [2020-09-25 11:11:39,555 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 11:11:39,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 842 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=578, Invalid=3454, Unknown=0, NotChecked=0, Total=4032 [2020-09-25 11:11:39,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 11:11:39,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 109. [2020-09-25 11:11:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 11:11:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 112 transitions. [2020-09-25 11:11:39,584 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 112 transitions. Word has length 107 [2020-09-25 11:11:39,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:39,590 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 112 transitions. [2020-09-25 11:11:39,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 11:11:39,590 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 112 transitions. [2020-09-25 11:11:39,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 11:11:39,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:39,592 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:11:39,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:11:39,592 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:39,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:39,593 INFO L82 PathProgramCache]: Analyzing trace with hash -936170188, now seen corresponding path program 1 times [2020-09-25 11:11:39,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:39,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712645570] [2020-09-25 11:11:39,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:39,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:43,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:43,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-09-25 11:11:43,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3438 [2020-09-25 11:11:43,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:43,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 11:11:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-25 11:11:43,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 11:11:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:11:43,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:11:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:43,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:43,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:43,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:11:43,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 11:11:43,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:43,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:43,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:11:43,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:43,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:43,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:43,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:11:43,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 11:11:43,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:43,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:43,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:11:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:43,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:11:43,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 11:11:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:43,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:43,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:43,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:43,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 11:11:43,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:43,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:11:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:11:43,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 11:11:43,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:43,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-25 11:11:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:43,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:43,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:43,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:43,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:43,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 11:11:43,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:43,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:43,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:11:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:11:43,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:11:43,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:44,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 11:11:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:44,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:44,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:44,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:11:44,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:44,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 11:11:44,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:44,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:11:44,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:11:44,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:11:44,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:11:45,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 11:11:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:11:45,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:11:45,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 11:11:45,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:11:45,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-25 11:11:45,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:11:45,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:11:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:11:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 11:11:45,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 11:11:45,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:11:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 30 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:11:46,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712645570] [2020-09-25 11:11:46,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:11:46,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-09-25 11:11:46,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537388986] [2020-09-25 11:11:46,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-09-25 11:11:46,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:11:46,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-09-25 11:11:46,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1043, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 11:11:46,038 INFO L87 Difference]: Start difference. First operand 109 states and 112 transitions. Second operand 34 states. [2020-09-25 11:11:47,401 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-09-25 11:11:47,682 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 61 [2020-09-25 11:11:47,951 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-09-25 11:11:48,587 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-09-25 11:11:48,781 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-09-25 11:11:49,562 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-09-25 11:11:51,421 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 57 [2020-09-25 11:11:51,639 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-25 11:11:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:11:52,267 INFO L93 Difference]: Finished difference Result 144 states and 148 transitions. [2020-09-25 11:11:52,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-09-25 11:11:52,268 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 111 [2020-09-25 11:11:52,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:11:52,270 INFO L225 Difference]: With dead ends: 144 [2020-09-25 11:11:52,270 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 11:11:52,272 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=477, Invalid=4079, Unknown=0, NotChecked=0, Total=4556 [2020-09-25 11:11:52,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 11:11:52,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 112. [2020-09-25 11:11:52,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 11:11:52,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 115 transitions. [2020-09-25 11:11:52,285 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 115 transitions. Word has length 111 [2020-09-25 11:11:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:11:52,285 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 115 transitions. [2020-09-25 11:11:52,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-09-25 11:11:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 115 transitions. [2020-09-25 11:11:52,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-25 11:11:52,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:11:52,287 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:52,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:11:52,287 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:11:52,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:11:52,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1616055414, now seen corresponding path program 3 times [2020-09-25 11:11:52,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:11:52,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048029471] [2020-09-25 11:11:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:11:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:11:52,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking...