/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 SequenceOfStatements --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:33:58,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:33:58,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:33:58,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:33:58,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:33:58,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:33:58,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:33:58,968 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:33:58,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:33:58,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:33:58,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:33:58,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:33:58,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:33:58,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:33:58,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:33:58,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:33:58,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:33:58,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:33:58,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:33:58,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:33:58,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:33:58,983 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:33:58,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:33:58,985 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:33:58,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:33:58,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:33:58,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:33:58,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:33:58,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:33:58,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:33:58,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:33:58,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:33:58,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:33:58,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:33:58,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:33:58,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:33:58,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:33:58,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:33:58,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:33:58,995 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:33:58,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:33:58,997 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 [2020-10-13 10:33:59,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:33:59,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:33:59,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:33:59,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:33:59,025 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:33:59,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:33:59,025 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:33:59,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:33:59,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:33:59,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:33:59,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:33:59,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:33:59,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:33:59,026 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:33:59,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:33:59,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:33:59,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:33:59,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:33:59,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:33:59,030 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:33:59,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:33:59,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:33:59,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:33:59,031 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:33:59,031 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:33:59,031 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:33:59,031 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:33:59,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:33:59,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:33:59,034 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 -> SequenceOfStatements 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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=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=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:33:59,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:33:59,385 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:33:59,389 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:33:59,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:33:59,393 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:33:59,393 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2020-10-13 10:33:59,462 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab14a6196/8edc87507a5d44e7977eac1a249a9ea1/FLAGa8ae22e11 [2020-10-13 10:33:59,978 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:33:59,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2020-10-13 10:34:00,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab14a6196/8edc87507a5d44e7977eac1a249a9ea1/FLAGa8ae22e11 [2020-10-13 10:34:00,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab14a6196/8edc87507a5d44e7977eac1a249a9ea1 [2020-10-13 10:34:00,342 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:34:00,344 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:34:00,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:34:00,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:34:00,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:34:00,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:00,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6231c00f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00, skipping insertion in model container [2020-10-13 10:34:00,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:00,364 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:34:00,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:34:00,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:34:00,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:34:00,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:34:00,980 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:34:00,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00 WrapperNode [2020-10-13 10:34:00,980 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:34:00,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:34:00,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:34:00,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:34:00,995 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:00,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:01,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:01,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:01,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:01,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:01,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (1/1) ... [2020-10-13 10:34:01,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:34:01,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:34:01,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:34:01,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:34:01,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (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 [2020-10-13 10:34:01,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:34:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:34:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-13 10:34:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-13 10:34:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-13 10:34:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-13 10:34:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2020-10-13 10:34:01,120 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-10-13 10:34:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2020-10-13 10:34:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2020-10-13 10:34:01,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:34:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:34:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:34:01,121 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-13 10:34:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-13 10:34:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-13 10:34:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-13 10:34:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-13 10:34:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-13 10:34:01,122 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-13 10:34:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-13 10:34:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-13 10:34:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-13 10:34:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-13 10:34:01,123 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-13 10:34:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-13 10:34:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-13 10:34:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-13 10:34:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-13 10:34:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-13 10:34:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-13 10:34:01,124 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-13 10:34:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-13 10:34:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-13 10:34:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-13 10:34:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-13 10:34:01,125 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-13 10:34:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-13 10:34:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-13 10:34:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-13 10:34:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-13 10:34:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-13 10:34:01,126 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-13 10:34:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-13 10:34:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-13 10:34:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-13 10:34:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-13 10:34:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-13 10:34:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-13 10:34:01,127 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-13 10:34:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-13 10:34:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-13 10:34:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-13 10:34:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-13 10:34:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-13 10:34:01,128 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-13 10:34:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-13 10:34:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-13 10:34:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-13 10:34:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-13 10:34:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-13 10:34:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-13 10:34:01,129 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-13 10:34:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-13 10:34:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-13 10:34:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:34:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:34:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:34:01,130 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:34:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:34:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-13 10:34:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:34:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-13 10:34:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-13 10:34:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-13 10:34:01,131 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-13 10:34:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-13 10:34:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-13 10:34:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-13 10:34:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-13 10:34:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-13 10:34:01,132 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-13 10:34:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-13 10:34:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-13 10:34:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-13 10:34:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-13 10:34:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-13 10:34:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-13 10:34:01,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-13 10:34:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-13 10:34:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-13 10:34:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-13 10:34:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-13 10:34:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-13 10:34:01,134 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-13 10:34:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-13 10:34:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-13 10:34:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-13 10:34:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-13 10:34:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-13 10:34:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-13 10:34:01,135 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-13 10:34:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-13 10:34:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-13 10:34:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-13 10:34:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-13 10:34:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-13 10:34:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-13 10:34:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-13 10:34:01,136 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-13 10:34:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-13 10:34:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-13 10:34:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-13 10:34:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-13 10:34:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-13 10:34:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-13 10:34:01,137 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-13 10:34:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-13 10:34:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-13 10:34:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-13 10:34:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-13 10:34:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:34:01,138 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2020-10-13 10:34:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-10-13 10:34:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:34:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2020-10-13 10:34:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2020-10-13 10:34:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:34:01,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:34:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:34:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:34:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:34:01,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:34:01,513 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-13 10:34:01,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:34:01,811 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-13 10:34:01,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:34:01 BoogieIcfgContainer [2020-10-13 10:34:01,820 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:34:01,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:34:01,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:34:01,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:34:01,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:34:00" (1/3) ... [2020-10-13 10:34:01,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279ad47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:34:01, skipping insertion in model container [2020-10-13 10:34:01,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:34:00" (2/3) ... [2020-10-13 10:34:01,837 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@279ad47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:34:01, skipping insertion in model container [2020-10-13 10:34:01,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:34:01" (3/3) ... [2020-10-13 10:34:01,839 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2020-10-13 10:34:01,850 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:34:01,862 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:34:01,875 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:34:01,899 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:34:01,899 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:34:01,900 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:34:01,900 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:34:01,900 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:34:01,900 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:34:01,901 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:34:01,901 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:34:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-10-13 10:34:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:34:01,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:01,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:34:01,929 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:01,936 INFO L82 PathProgramCache]: Analyzing trace with hash 881770505, now seen corresponding path program 1 times [2020-10-13 10:34:01,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:01,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595539030] [2020-10-13 10:34:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:02,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:34:02,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:02,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 10:34:02,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:02,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:34:02,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:02,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:02,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:02,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595539030] [2020-10-13 10:34:02,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:34:02,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 10:34:02,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370314012] [2020-10-13 10:34:02,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 10:34:02,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:02,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 10:34:02,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:34:02,504 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 3 states. [2020-10-13 10:34:02,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:02,701 INFO L93 Difference]: Finished difference Result 141 states and 202 transitions. [2020-10-13 10:34:02,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 10:34:02,707 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-13 10:34:02,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:02,717 INFO L225 Difference]: With dead ends: 141 [2020-10-13 10:34:02,717 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 10:34:02,721 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 10:34:02,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 10:34:02,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-13 10:34:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-13 10:34:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-10-13 10:34:02,769 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 11 [2020-10-13 10:34:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:02,769 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-10-13 10:34:02,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 10:34:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-10-13 10:34:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-13 10:34:02,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:02,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:34:02,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:34:02,771 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:02,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:02,772 INFO L82 PathProgramCache]: Analyzing trace with hash 857758959, now seen corresponding path program 1 times [2020-10-13 10:34:02,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:02,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764231981] [2020-10-13 10:34:02,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-13 10:34:02,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-13 10:34:02,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:34:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:02,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:34:02,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:02,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:02,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:02,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:02,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:34:02,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:02,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:02,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764231981] [2020-10-13 10:34:02,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:34:02,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 10:34:02,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388608194] [2020-10-13 10:34:02,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 10:34:02,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:02,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 10:34:02,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:34:02,953 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 4 states. [2020-10-13 10:34:03,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:03,109 INFO L93 Difference]: Finished difference Result 80 states and 101 transitions. [2020-10-13 10:34:03,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 10:34:03,110 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-13 10:34:03,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:03,112 INFO L225 Difference]: With dead ends: 80 [2020-10-13 10:34:03,112 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 10:34:03,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 10:34:03,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 10:34:03,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 53. [2020-10-13 10:34:03,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-13 10:34:03,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-10-13 10:34:03,145 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 11 [2020-10-13 10:34:03,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:03,146 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-10-13 10:34:03,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 10:34:03,147 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-10-13 10:34:03,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-13 10:34:03,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:03,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:34:03,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:34:03,148 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:03,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1045120254, now seen corresponding path program 1 times [2020-10-13 10:34:03,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:03,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702057934] [2020-10-13 10:34:03,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:03,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:03,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:34:03,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-13 10:34:03,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:34:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:03,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:34:03,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:03,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:03,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:03,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:03,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:03,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:03,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:34:03,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:03,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:03,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702057934] [2020-10-13 10:34:03,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:03,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 10:34:03,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441769734] [2020-10-13 10:34:03,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:34:03,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:03,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:34:03,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:34:03,475 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 5 states. [2020-10-13 10:34:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:03,670 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2020-10-13 10:34:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:34:03,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-13 10:34:03,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:03,672 INFO L225 Difference]: With dead ends: 88 [2020-10-13 10:34:03,673 INFO L226 Difference]: Without dead ends: 71 [2020-10-13 10:34:03,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:34:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-13 10:34:03,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 60. [2020-10-13 10:34:03,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-13 10:34:03,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 74 transitions. [2020-10-13 10:34:03,684 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 74 transitions. Word has length 16 [2020-10-13 10:34:03,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:03,700 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 74 transitions. [2020-10-13 10:34:03,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:34:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 74 transitions. [2020-10-13 10:34:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 10:34:03,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:03,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:34:03,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:34:03,701 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:03,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:03,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1689645489, now seen corresponding path program 2 times [2020-10-13 10:34:03,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:03,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173960384] [2020-10-13 10:34:03,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:03,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:03,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:03,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:03,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:34:03,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:03,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 10:34:03,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:34:03,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:03,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-13 10:34:03,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:03,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:03,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:03,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:03,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:03,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:03,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:03,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:34:03,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:03,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:03,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:03,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173960384] [2020-10-13 10:34:03,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:03,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 10:34:03,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423548866] [2020-10-13 10:34:03,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:34:03,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:03,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:34:03,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:34:03,926 INFO L87 Difference]: Start difference. First operand 60 states and 74 transitions. Second operand 6 states. [2020-10-13 10:34:04,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:04,109 INFO L93 Difference]: Finished difference Result 94 states and 118 transitions. [2020-10-13 10:34:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:34:04,109 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-13 10:34:04,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:04,111 INFO L225 Difference]: With dead ends: 94 [2020-10-13 10:34:04,111 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 10:34:04,112 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:34:04,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 10:34:04,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2020-10-13 10:34:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-13 10:34:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2020-10-13 10:34:04,122 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 21 [2020-10-13 10:34:04,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:04,123 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2020-10-13 10:34:04,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:34:04,123 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2020-10-13 10:34:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-13 10:34:04,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:04,125 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:34:04,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:34:04,125 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:04,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:04,125 INFO L82 PathProgramCache]: Analyzing trace with hash 895053726, now seen corresponding path program 3 times [2020-10-13 10:34:04,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:04,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [136035673] [2020-10-13 10:34:04,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:04,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:04,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:04,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:34:04,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:34:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 10:34:04,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:34:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:34:04,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:04,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:04,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:04,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:04,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:04,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:34:04,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:04,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:04,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:04,320 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-13 10:34:04,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [136035673] [2020-10-13 10:34:04,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:34:04,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 10:34:04,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155647703] [2020-10-13 10:34:04,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 10:34:04,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:04,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 10:34:04,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-13 10:34:04,324 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 5 states. [2020-10-13 10:34:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:04,513 INFO L93 Difference]: Finished difference Result 115 states and 148 transitions. [2020-10-13 10:34:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 10:34:04,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-10-13 10:34:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:04,515 INFO L225 Difference]: With dead ends: 115 [2020-10-13 10:34:04,515 INFO L226 Difference]: Without dead ends: 92 [2020-10-13 10:34:04,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:34:04,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-13 10:34:04,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2020-10-13 10:34:04,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-13 10:34:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2020-10-13 10:34:04,543 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 26 [2020-10-13 10:34:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:04,544 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2020-10-13 10:34:04,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 10:34:04,544 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2020-10-13 10:34:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-13 10:34:04,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:04,551 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:34:04,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:34:04,552 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:04,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:04,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1014357418, now seen corresponding path program 1 times [2020-10-13 10:34:04,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:04,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957515799] [2020-10-13 10:34:04,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:04,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:04,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:04,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:05,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:05,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-13 10:34:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:05,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-10-13 10:34:05,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:34:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:05,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:34:05,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:05,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:05,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:05,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:05,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:05,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:34:05,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:05,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:05,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:05,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:05,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:05,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-13 10:34:05,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:05,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-13 10:34:05,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:34:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 10:34:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:05,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:05,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:06,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:06,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:34:06,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:06,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 10:34:06,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:34:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:06,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 10:34:06,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:06,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:06,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:06,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:34:06,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:06,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 10:34:06,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:06,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:34:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:06,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:34:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:06,154 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:06,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957515799] [2020-10-13 10:34:06,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:34:06,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 10:34:06,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356992316] [2020-10-13 10:34:06,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:34:06,158 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:06,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:34:06,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:34:06,160 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand 13 states. [2020-10-13 10:34:06,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:06,672 INFO L93 Difference]: Finished difference Result 176 states and 223 transitions. [2020-10-13 10:34:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 10:34:06,673 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-13 10:34:06,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:06,675 INFO L225 Difference]: With dead ends: 176 [2020-10-13 10:34:06,675 INFO L226 Difference]: Without dead ends: 100 [2020-10-13 10:34:06,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:34:06,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-13 10:34:06,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2020-10-13 10:34:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 10:34:06,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 121 transitions. [2020-10-13 10:34:06,703 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 121 transitions. Word has length 48 [2020-10-13 10:34:06,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:06,704 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 121 transitions. [2020-10-13 10:34:06,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:34:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 121 transitions. [2020-10-13 10:34:06,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 10:34:06,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:06,708 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:34:06,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:34:06,708 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:06,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1353319858, now seen corresponding path program 1 times [2020-10-13 10:34:06,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:06,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354105845] [2020-10-13 10:34:06,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:06,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:06,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:07,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:08,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:08,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 10:34:08,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:08,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-13 10:34:08,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:34:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:34:08,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:08,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:08,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:08,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:08,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:34:08,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:08,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:08,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:08,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:08,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 10:34:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-13 10:34:08,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:34:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 10:34:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:08,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:08,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:08,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:08,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-13 10:34:08,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:08,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-13 10:34:08,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:34:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:08,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 10:34:08,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:08,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:08,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:08,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:08,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-13 10:34:08,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:08,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 10:34:08,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:34:08,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:08,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:34:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:08,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354105845] [2020-10-13 10:34:08,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:08,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 10:34:08,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619066798] [2020-10-13 10:34:08,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 10:34:08,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:08,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 10:34:08,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-13 10:34:08,581 INFO L87 Difference]: Start difference. First operand 95 states and 121 transitions. Second operand 14 states. [2020-10-13 10:34:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:09,055 INFO L93 Difference]: Finished difference Result 191 states and 241 transitions. [2020-10-13 10:34:09,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:34:09,056 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 51 [2020-10-13 10:34:09,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:09,058 INFO L225 Difference]: With dead ends: 191 [2020-10-13 10:34:09,058 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 10:34:09,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2020-10-13 10:34:09,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 10:34:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2020-10-13 10:34:09,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 10:34:09,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 124 transitions. [2020-10-13 10:34:09,069 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 124 transitions. Word has length 51 [2020-10-13 10:34:09,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:09,070 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 124 transitions. [2020-10-13 10:34:09,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 10:34:09,070 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 124 transitions. [2020-10-13 10:34:09,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 10:34:09,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:09,071 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-10-13 10:34:09,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:34:09,072 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:09,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:09,072 INFO L82 PathProgramCache]: Analyzing trace with hash -1915257002, now seen corresponding path program 2 times [2020-10-13 10:34:09,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:09,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2310484] [2020-10-13 10:34:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:09,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:09,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:10,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:10,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-13 10:34:10,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:10,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-10-13 10:34:10,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:34:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:10,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:34:10,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:10,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:10,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:10,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:10,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:10,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:34:10,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:10,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:10,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:10,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:10,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:10,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:10,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-13 10:34:10,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:10,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-13 10:34:10,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:34:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:10,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 10:34:10,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:10,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:10,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:10,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:10,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-13 10:34:10,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:10,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-13 10:34:10,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:34:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:34:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:10,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:10,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:10,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-13 10:34:10,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:10,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-13 10:34:10,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:34:10,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:34:10,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:10,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2310484] [2020-10-13 10:34:10,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:10,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 10:34:10,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460886334] [2020-10-13 10:34:10,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 10:34:10,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:10,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 10:34:10,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:34:10,662 INFO L87 Difference]: Start difference. First operand 98 states and 124 transitions. Second operand 15 states. [2020-10-13 10:34:11,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:11,186 INFO L93 Difference]: Finished difference Result 197 states and 247 transitions. [2020-10-13 10:34:11,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 10:34:11,188 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-13 10:34:11,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:11,190 INFO L225 Difference]: With dead ends: 197 [2020-10-13 10:34:11,190 INFO L226 Difference]: Without dead ends: 106 [2020-10-13 10:34:11,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2020-10-13 10:34:11,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-13 10:34:11,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2020-10-13 10:34:11,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-13 10:34:11,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 127 transitions. [2020-10-13 10:34:11,204 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 127 transitions. Word has length 54 [2020-10-13 10:34:11,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:11,204 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 127 transitions. [2020-10-13 10:34:11,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 10:34:11,205 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 127 transitions. [2020-10-13 10:34:11,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:34:11,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:11,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-10-13 10:34:11,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:34:11,209 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:11,210 INFO L82 PathProgramCache]: Analyzing trace with hash -802194098, now seen corresponding path program 3 times [2020-10-13 10:34:11,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:11,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346170023] [2020-10-13 10:34:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:11,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:11,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:11,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:13,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:13,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 10:34:13,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:13,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1791 [2020-10-13 10:34:13,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:13,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:34:13,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:13,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:34:13,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 10:34:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:13,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:13,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:13,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:13,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:13,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:34:13,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:13,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:13,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:13,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:13,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:13,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:13,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-13 10:34:13,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:13,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-13 10:34:13,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:34:13,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 10:34:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:13,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:13,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:13,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:13,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:13,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 10:34:13,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:13,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-13 10:34:13,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 10:34:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:13,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:34:13,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:13,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:13,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:13,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:13,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 10:34:13,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:13,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-13 10:34:13,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:34:13,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:13,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 10:34:13,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 27 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:13,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346170023] [2020-10-13 10:34:13,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:13,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:34:13,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928736798] [2020-10-13 10:34:13,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:34:13,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:13,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:34:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:34:13,608 INFO L87 Difference]: Start difference. First operand 101 states and 127 transitions. Second operand 16 states. [2020-10-13 10:34:14,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:14,170 INFO L93 Difference]: Finished difference Result 196 states and 243 transitions. [2020-10-13 10:34:14,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:34:14,171 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 57 [2020-10-13 10:34:14,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:14,173 INFO L225 Difference]: With dead ends: 196 [2020-10-13 10:34:14,173 INFO L226 Difference]: Without dead ends: 122 [2020-10-13 10:34:14,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:34:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-13 10:34:14,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 117. [2020-10-13 10:34:14,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-13 10:34:14,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 146 transitions. [2020-10-13 10:34:14,189 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 146 transitions. Word has length 57 [2020-10-13 10:34:14,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:14,191 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 146 transitions. [2020-10-13 10:34:14,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:34:14,192 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 146 transitions. [2020-10-13 10:34:14,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-13 10:34:14,192 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:14,193 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-13 10:34:14,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:34:14,193 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:14,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:14,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1307253846, now seen corresponding path program 4 times [2020-10-13 10:34:14,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:14,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879128253] [2020-10-13 10:34:14,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:14,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:15,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:15,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 10:34:15,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:15,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1678 [2020-10-13 10:34:15,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 10:34:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:15,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 10:34:15,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:15,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:15,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:15,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:15,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:15,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:15,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:34:15,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:15,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:15,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:15,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:15,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:16,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:16,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 10:34:16,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:16,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-13 10:34:16,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:34:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:16,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 10:34:16,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:16,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:16,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:16,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:16,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 10:34:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-13 10:34:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:34:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-13 10:34:16,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:16,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:16,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:16,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-13 10:34:16,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:16,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-13 10:34:16,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:16,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:34:16,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:16,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 10:34:16,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 27 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:34:16,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879128253] [2020-10-13 10:34:16,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:16,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 10:34:16,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844747597] [2020-10-13 10:34:16,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 10:34:16,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:16,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 10:34:16,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-13 10:34:16,725 INFO L87 Difference]: Start difference. First operand 117 states and 146 transitions. Second operand 17 states. [2020-10-13 10:34:17,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:17,618 INFO L93 Difference]: Finished difference Result 221 states and 270 transitions. [2020-10-13 10:34:17,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:34:17,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 60 [2020-10-13 10:34:17,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:17,621 INFO L225 Difference]: With dead ends: 221 [2020-10-13 10:34:17,624 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 10:34:17,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:34:17,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 10:34:17,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 133. [2020-10-13 10:34:17,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-13 10:34:17,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 166 transitions. [2020-10-13 10:34:17,642 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 166 transitions. Word has length 60 [2020-10-13 10:34:17,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:17,643 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 166 transitions. [2020-10-13 10:34:17,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 10:34:17,643 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 166 transitions. [2020-10-13 10:34:17,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-13 10:34:17,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:17,645 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-13 10:34:17,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:34:17,646 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:17,647 INFO L82 PathProgramCache]: Analyzing trace with hash -90521522, now seen corresponding path program 5 times [2020-10-13 10:34:17,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:17,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555033722] [2020-10-13 10:34:17,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:17,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:17,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:17,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 10:34:17,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:17,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-13 10:34:17,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:34:17,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:17,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 10:34:17,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:17,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:17,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:17,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:17,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:34:17,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:17,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:17,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:17,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:17,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:17,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:17,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:18,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:34:18,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-13 10:34:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:34:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:18,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 10:34:18,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:18,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:18,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:18,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:18,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:34:18,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-13 10:34:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:18,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:18,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:18,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:34:18,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 10:34:18,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:18,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 10:34:18,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555033722] [2020-10-13 10:34:18,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:34:18,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 10:34:18,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377392382] [2020-10-13 10:34:18,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 10:34:18,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:18,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 10:34:18,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-13 10:34:18,150 INFO L87 Difference]: Start difference. First operand 133 states and 166 transitions. Second operand 6 states. [2020-10-13 10:34:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:18,333 INFO L93 Difference]: Finished difference Result 144 states and 179 transitions. [2020-10-13 10:34:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 10:34:18,333 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-10-13 10:34:18,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:18,335 INFO L225 Difference]: With dead ends: 144 [2020-10-13 10:34:18,335 INFO L226 Difference]: Without dead ends: 142 [2020-10-13 10:34:18,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:34:18,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-13 10:34:18,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 131. [2020-10-13 10:34:18,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-13 10:34:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2020-10-13 10:34:18,346 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 63 [2020-10-13 10:34:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:18,347 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2020-10-13 10:34:18,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 10:34:18,347 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2020-10-13 10:34:18,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-13 10:34:18,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:18,348 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-13 10:34:18,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 10:34:18,348 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:18,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:18,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1522769064, now seen corresponding path program 1 times [2020-10-13 10:34:18,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:18,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1805949162] [2020-10-13 10:34:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:18,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:18,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:18,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:18,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:23,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:23,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-13 10:34:23,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:34:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-13 10:34:23,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:23,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 10:34:23,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:34:23,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 10:34:23,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:23,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:23,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:23,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:34:23,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:23,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:23,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:23,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:23,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:34:23,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:34:23,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-13 10:34:23,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:34:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:23,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:34:23,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:24,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:24,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:24,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:34:24,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:24,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-13 10:34:24,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:34:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:34:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:24,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:24,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:24,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:24,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:34:24,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:24,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-13 10:34:24,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:24,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:34:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 10:34:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:24,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:34:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:24,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:24,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-13 10:34:24,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:34:24,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:34:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:34:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-13 10:34:24,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1805949162] [2020-10-13 10:34:24,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:34:24,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-13 10:34:24,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772628400] [2020-10-13 10:34:24,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 10:34:24,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:24,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 10:34:24,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-13 10:34:24,422 INFO L87 Difference]: Start difference. First operand 131 states and 163 transitions. Second operand 18 states. [2020-10-13 10:34:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:25,187 INFO L93 Difference]: Finished difference Result 237 states and 318 transitions. [2020-10-13 10:34:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 10:34:25,188 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 74 [2020-10-13 10:34:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:25,192 INFO L225 Difference]: With dead ends: 237 [2020-10-13 10:34:25,193 INFO L226 Difference]: Without dead ends: 209 [2020-10-13 10:34:25,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:34:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-13 10:34:25,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 181. [2020-10-13 10:34:25,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-13 10:34:25,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 233 transitions. [2020-10-13 10:34:25,223 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 233 transitions. Word has length 74 [2020-10-13 10:34:25,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:25,224 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 233 transitions. [2020-10-13 10:34:25,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 10:34:25,224 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 233 transitions. [2020-10-13 10:34:25,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-13 10:34:25,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:25,225 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-13 10:34:25,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 10:34:25,226 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:25,226 INFO L82 PathProgramCache]: Analyzing trace with hash 977789968, now seen corresponding path program 1 times [2020-10-13 10:34:25,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:25,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824206645] [2020-10-13 10:34:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:25,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:25,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:27,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:27,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-13 10:34:27,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:34:27,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2516 [2020-10-13 10:34:27,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:27,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 10:34:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:34:27,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-13 10:34:27,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:27,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:27,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:27,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:27,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:27,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:34:27,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:27,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:27,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:27,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:27,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:28,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:28,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:34:28,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:28,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-13 10:34:28,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:28,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:34:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:28,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:34:28,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:28,435 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2020-10-13 10:34:28,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:28,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:28,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:28,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:28,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:34:28,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:28,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-10-13 10:34:28,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:34:28,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:28,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:34:28,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:28,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:28,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:29,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:29,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:34:29,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-13 10:34:29,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:34:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:34:29,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:34:29,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:29,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:34:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:29,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:29,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:34:29,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:29,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:34:29,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:34:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:29,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:34:29,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:30,134 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 10:34:30,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824206645] [2020-10-13 10:34:30,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:30,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 10:34:30,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736873605] [2020-10-13 10:34:30,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 10:34:30,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:30,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 10:34:30,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2020-10-13 10:34:30,137 INFO L87 Difference]: Start difference. First operand 181 states and 233 transitions. Second operand 26 states. [2020-10-13 10:34:31,154 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2020-10-13 10:34:31,619 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-13 10:34:33,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:33,648 INFO L93 Difference]: Finished difference Result 335 states and 476 transitions. [2020-10-13 10:34:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 10:34:33,650 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 75 [2020-10-13 10:34:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:33,654 INFO L225 Difference]: With dead ends: 335 [2020-10-13 10:34:33,654 INFO L226 Difference]: Without dead ends: 282 [2020-10-13 10:34:33,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=250, Invalid=2102, Unknown=0, NotChecked=0, Total=2352 [2020-10-13 10:34:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-13 10:34:33,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 238. [2020-10-13 10:34:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 238 states. [2020-10-13 10:34:33,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 313 transitions. [2020-10-13 10:34:33,693 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 313 transitions. Word has length 75 [2020-10-13 10:34:33,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:33,693 INFO L479 AbstractCegarLoop]: Abstraction has 238 states and 313 transitions. [2020-10-13 10:34:33,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 10:34:33,693 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 313 transitions. [2020-10-13 10:34:33,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-13 10:34:33,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:33,701 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-13 10:34:33,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 10:34:33,702 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:33,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:33,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1185708632, now seen corresponding path program 2 times [2020-10-13 10:34:33,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:33,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129348198] [2020-10-13 10:34:33,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:36,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:36,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-13 10:34:36,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:34:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2735 [2020-10-13 10:34:36,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 10:34:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 10:34:36,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-13 10:34:36,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:36,785 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 34 [2020-10-13 10:34:37,027 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 31 [2020-10-13 10:34:37,187 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 34 [2020-10-13 10:34:37,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:37,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:37,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:37,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:37,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:37,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:37,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 10:34:37,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:37,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:37,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:37,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:37,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:37,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:37,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-13 10:34:37,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:37,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-13 10:34:37,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:37,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:34:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:34:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:39,197 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 211 DAG size of output: 110 [2020-10-13 10:34:40,588 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 292 DAG size of output: 109 [2020-10-13 10:34:40,760 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 46 [2020-10-13 10:34:40,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:40,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:41,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:41,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:34:41,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:41,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-13 10:34:41,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 10:34:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:41,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 10:34:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:41,423 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 50 [2020-10-13 10:34:41,677 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 51 [2020-10-13 10:34:41,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 10:34:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:41,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:41,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:34:41,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:41,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-13 10:34:41,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 10:34:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:34:41,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:34:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:42,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-13 10:34:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:42,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:42,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:42,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-13 10:34:42,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:42,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-13 10:34:42,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:34:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-13 10:34:42,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:34:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-13 10:34:43,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129348198] [2020-10-13 10:34:43,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:34:43,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 10:34:43,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235324763] [2020-10-13 10:34:43,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 10:34:43,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:34:43,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 10:34:43,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-13 10:34:43,056 INFO L87 Difference]: Start difference. First operand 238 states and 313 transitions. Second operand 27 states. [2020-10-13 10:34:44,055 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2020-10-13 10:34:44,568 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-13 10:34:45,103 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-13 10:34:45,696 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-10-13 10:34:46,217 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-13 10:34:47,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:34:47,565 INFO L93 Difference]: Finished difference Result 341 states and 486 transitions. [2020-10-13 10:34:47,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-13 10:34:47,567 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 76 [2020-10-13 10:34:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:34:47,570 INFO L225 Difference]: With dead ends: 341 [2020-10-13 10:34:47,570 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 10:34:47,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=224, Invalid=2226, Unknown=0, NotChecked=0, Total=2450 [2020-10-13 10:34:47,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 10:34:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 239. [2020-10-13 10:34:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-13 10:34:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 315 transitions. [2020-10-13 10:34:47,599 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 315 transitions. Word has length 76 [2020-10-13 10:34:47,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:34:47,599 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 315 transitions. [2020-10-13 10:34:47,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 10:34:47,599 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 315 transitions. [2020-10-13 10:34:47,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-13 10:34:47,601 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:34:47,601 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2020-10-13 10:34:47,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 10:34:47,601 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:34:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:34:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash -1114435475, now seen corresponding path program 1 times [2020-10-13 10:34:47,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:34:47,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185684861] [2020-10-13 10:34:47,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:34:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:47,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:47,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:48,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:48,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:48,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:49,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:49,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:49,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:49,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:49,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:50,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:50,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:50,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:50,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:51,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:51,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:51,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:52,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:52,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:52,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:52,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-13 10:34:52,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-13 10:34:52,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 10:34:52,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 10:34:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 10:34:52,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-13 10:34:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:52,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:34:52,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:52,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:52,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:52,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:34:52,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:34:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:34:52,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:34:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:34:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:34:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:34:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 10:34:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:52,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:53,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:53,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:53,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:54,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:54,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:54,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 10:34:54,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-13 10:34:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1999 [2020-10-13 10:34:54,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 10:34:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:34:54,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 10:34:54,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:34:54,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:34:54,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:34:54,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:55,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:55,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:34:55,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:34:55,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 10:34:55,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:34:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-13 10:34:55,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:34:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 10:34:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:34:55,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-13 10:34:55,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:38:02,121 WARN L193 SmtUtils]: Spent 42.60 s on a formula simplification. DAG size of input: 564 DAG size of output: 211