/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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-simple/sll2n_prepend_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 05:11:34,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 05:11:34,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 05:11:35,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 05:11:35,022 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 05:11:35,033 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 05:11:35,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 05:11:35,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 05:11:35,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 05:11:35,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 05:11:35,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 05:11:35,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 05:11:35,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 05:11:35,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 05:11:35,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 05:11:35,052 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 05:11:35,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 05:11:35,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 05:11:35,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 05:11:35,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 05:11:35,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 05:11:35,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 05:11:35,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 05:11:35,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 05:11:35,073 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 05:11:35,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 05:11:35,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 05:11:35,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 05:11:35,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 05:11:35,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 05:11:35,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 05:11:35,078 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 05:11:35,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 05:11:35,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 05:11:35,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 05:11:35,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 05:11:35,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 05:11:35,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 05:11:35,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 05:11:35,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 05:11:35,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 05:11:35,085 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 [2020-10-14 05:11:35,128 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 05:11:35,128 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 05:11:35,130 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 05:11:35,130 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 05:11:35,131 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 05:11:35,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 05:11:35,131 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 05:11:35,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 05:11:35,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 05:11:35,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 05:11:35,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 05:11:35,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 05:11:35,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 05:11:35,134 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 05:11:35,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 05:11:35,134 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 05:11:35,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 05:11:35,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 05:11:35,135 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 05:11:35,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 05:11:35,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 05:11:35,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 05:11:35,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 05:11:35,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 05:11:35,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 05:11:35,136 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 05:11:35,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 05:11:35,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 05:11:35,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 05:11:35,137 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 05:11:35,436 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 05:11:35,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 05:11:35,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 05:11:35,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 05:11:35,455 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 05:11:35,455 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_equal.i [2020-10-14 05:11:35,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/374c59d5b/15d216ac33d448eb93adedd6a4b7d159/FLAG20c2ddbbe [2020-10-14 05:11:36,001 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 05:11:36,002 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_prepend_equal.i [2020-10-14 05:11:36,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/374c59d5b/15d216ac33d448eb93adedd6a4b7d159/FLAG20c2ddbbe [2020-10-14 05:11:36,350 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/374c59d5b/15d216ac33d448eb93adedd6a4b7d159 [2020-10-14 05:11:36,357 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 05:11:36,359 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 05:11:36,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 05:11:36,360 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 05:11:36,363 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 05:11:36,364 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:11:36" (1/1) ... [2020-10-14 05:11:36,367 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68096a2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:36, skipping insertion in model container [2020-10-14 05:11:36,367 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:11:36" (1/1) ... [2020-10-14 05:11:36,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 05:11:36,423 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 05:11:36,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:11:36,957 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 05:11:37,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 05:11:37,098 INFO L208 MainTranslator]: Completed translation [2020-10-14 05:11:37,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37 WrapperNode [2020-10-14 05:11:37,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 05:11:37,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 05:11:37,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 05:11:37,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 05:11:37,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (1/1) ... [2020-10-14 05:11:37,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (1/1) ... [2020-10-14 05:11:37,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (1/1) ... [2020-10-14 05:11:37,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (1/1) ... [2020-10-14 05:11:37,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (1/1) ... [2020-10-14 05:11:37,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (1/1) ... [2020-10-14 05:11:37,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (1/1) ... [2020-10-14 05:11:37,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 05:11:37,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 05:11:37,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 05:11:37,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 05:11:37,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (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 [2020-10-14 05:11:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 05:11:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 05:11:37,244 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-14 05:11:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-14 05:11:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-14 05:11:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-14 05:11:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-14 05:11:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-14 05:11:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2020-10-14 05:11:37,245 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 05:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 05:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-14 05:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-14 05:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 05:11:37,246 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 05:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 05:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 05:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 05:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 05:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 05:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 05:11:37,247 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 05:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 05:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 05:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 05:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 05:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 05:11:37,248 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 05:11:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 05:11:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 05:11:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 05:11:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 05:11:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 05:11:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 05:11:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 05:11:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 05:11:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 05:11:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 05:11:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 05:11:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 05:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 05:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 05:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 05:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 05:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 05:11:37,252 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 05:11:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 05:11:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 05:11:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 05:11:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 05:11:37,253 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 05:11:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 05:11:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 05:11:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 05:11:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 05:11:37,254 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 05:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 05:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 05:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 05:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 05:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 05:11:37,255 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 05:11:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 05:11:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 05:11:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 05:11:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 05:11:37,256 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 05:11:37,257 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 05:11:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 05:11:37,258 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 05:11:37,259 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 05:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 05:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 05:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 05:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 05:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 05:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 05:11:37,260 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 05:11:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 05:11:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 05:11:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 05:11:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 05:11:37,261 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 05:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 05:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 05:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 05:11:37,262 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 05:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 05:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 05:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 05:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 05:11:37,263 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 05:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 05:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 05:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 05:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 05:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 05:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 05:11:37,264 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 05:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 05:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 05:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 05:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 05:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 05:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 05:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 05:11:37,265 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 05:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 05:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 05:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 05:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 05:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 05:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 05:11:37,266 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 05:11:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 05:11:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 05:11:37,267 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-14 05:11:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-14 05:11:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 05:11:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 05:11:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 05:11:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-14 05:11:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-14 05:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 05:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 05:11:37,270 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2020-10-14 05:11:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 05:11:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 05:11:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 05:11:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 05:11:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 05:11:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 05:11:37,592 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-14 05:11:37,770 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 05:11:37,770 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-14 05:11:37,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:11:37 BoogieIcfgContainer [2020-10-14 05:11:37,774 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 05:11:37,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 05:11:37,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 05:11:37,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 05:11:37,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:11:36" (1/3) ... [2020-10-14 05:11:37,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402e7f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:11:37, skipping insertion in model container [2020-10-14 05:11:37,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:11:37" (2/3) ... [2020-10-14 05:11:37,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402e7f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:11:37, skipping insertion in model container [2020-10-14 05:11:37,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:11:37" (3/3) ... [2020-10-14 05:11:37,782 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_equal.i [2020-10-14 05:11:37,793 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 05:11:37,801 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 05:11:37,813 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 05:11:37,836 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 05:11:37,837 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 05:11:37,837 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 05:11:37,837 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 05:11:37,837 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 05:11:37,838 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 05:11:37,838 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 05:11:37,838 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 05:11:37,856 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-14 05:11:37,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:11:37,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:37,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:37,865 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:37,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:37,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1741018156, now seen corresponding path program 1 times [2020-10-14 05:11:37,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:37,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101054314] [2020-10-14 05:11:37,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:38,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:38,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:38,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:38,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:11:38,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:11:38,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 790 [2020-10-14 05:11:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:38,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-14 05:11:38,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 05:11:38,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:38,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:38,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:38,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:38,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:38,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:11:38,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:38,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:38,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:38,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:38,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:38,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:38,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:38,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:38,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:38,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:38,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:11:38,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:38,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:38,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-14 05:11:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:11:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:38,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:38,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:38,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:11:38,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:38,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-14 05:11:38,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:38,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:38,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:38,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:11:38,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:38,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:38,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:38,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:38,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:38,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:38,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:11:38,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:38,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:38,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:39,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:39,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:39,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:11:39,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101054314] [2020-10-14 05:11:39,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:11:39,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 05:11:39,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413668782] [2020-10-14 05:11:39,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 05:11:39,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:39,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 05:11:39,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 05:11:39,042 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-14 05:11:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:39,230 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-10-14 05:11:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 05:11:39,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-10-14 05:11:39,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:39,242 INFO L225 Difference]: With dead ends: 88 [2020-10-14 05:11:39,242 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:11:39,246 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 05:11:39,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:11:39,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-14 05:11:39,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-14 05:11:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-10-14 05:11:39,295 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 28 [2020-10-14 05:11:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:39,295 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-10-14 05:11:39,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 05:11:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-10-14 05:11:39,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-14 05:11:39,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:39,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:39,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 05:11:39,299 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:39,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:39,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1529575644, now seen corresponding path program 1 times [2020-10-14 05:11:39,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:39,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546197263] [2020-10-14 05:11:39,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:39,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:39,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 05:11:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:11:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-10-14 05:11:39,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:39,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:11:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:11:39,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:11:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:39,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:39,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:39,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:39,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:39,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:39,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:11:39,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:39,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:39,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:39,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:39,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:39,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:39,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:39,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:11:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:39,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:11:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:11:39,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:39,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:40,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-14 05:11:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:40,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:40,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:40,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:11:40,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:40,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:11:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:40,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:11:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:40,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:40,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:40,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:40,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:11:40,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:40,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 05:11:40,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546197263] [2020-10-14 05:11:40,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:11:40,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 05:11:40,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988324865] [2020-10-14 05:11:40,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 05:11:40,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:40,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 05:11:40,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 05:11:40,072 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 7 states. [2020-10-14 05:11:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:40,375 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2020-10-14 05:11:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 05:11:40,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-14 05:11:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:40,378 INFO L225 Difference]: With dead ends: 58 [2020-10-14 05:11:40,378 INFO L226 Difference]: Without dead ends: 37 [2020-10-14 05:11:40,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:11:40,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-14 05:11:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-10-14 05:11:40,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 05:11:40,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-14 05:11:40,389 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 28 [2020-10-14 05:11:40,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:40,389 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-14 05:11:40,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 05:11:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-14 05:11:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 05:11:40,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:40,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:40,392 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 05:11:40,392 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:40,393 INFO L82 PathProgramCache]: Analyzing trace with hash -937541417, now seen corresponding path program 1 times [2020-10-14 05:11:40,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:40,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644203280] [2020-10-14 05:11:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:40,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:40,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:40,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:41,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:41,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 05:11:41,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:11:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1293 [2020-10-14 05:11:41,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:41,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:41,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:11:41,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:11:41,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:11:41,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:41,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:41,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:41,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:41,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:11:41,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:41,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:41,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:41,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:41,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 05:11:41,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-14 05:11:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:41,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:11:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:11:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 05:11:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:41,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:41,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:41,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:41,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:41,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:11:41,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:41,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:11:41,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:41,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:41,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:41,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-14 05:11:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:41,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:41,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:41,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:11:41,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:41,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:11:41,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:41,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:41,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:11:41,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:41,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:41,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:41,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:41,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:41,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:41,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:11:41,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:41,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:41,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:41,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:41,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:11:41,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644203280] [2020-10-14 05:11:41,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:11:41,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 05:11:41,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872182077] [2020-10-14 05:11:41,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 05:11:41,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:41,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 05:11:41,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 05:11:41,983 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 8 states. [2020-10-14 05:11:42,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:42,142 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-14 05:11:42,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:11:42,143 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-10-14 05:11:42,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:42,144 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:11:42,144 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 05:11:42,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-14 05:11:42,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 05:11:42,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-14 05:11:42,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 05:11:42,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-14 05:11:42,153 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 37 [2020-10-14 05:11:42,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:42,153 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-14 05:11:42,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 05:11:42,154 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-14 05:11:42,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:11:42,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:42,155 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:42,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 05:11:42,156 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:42,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:42,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1717388092, now seen corresponding path program 2 times [2020-10-14 05:11:42,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:42,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316125974] [2020-10-14 05:11:42,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:42,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:42,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:42,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:11:42,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:42,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-14 05:11:42,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:42,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:11:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:11:42,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 05:11:42,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:42,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:42,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:42,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:42,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:42,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:42,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:11:42,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:42,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:42,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:42,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:42,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:42,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:42,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:42,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:11:42,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 05:11:42,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:42,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:11:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:42,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:11:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:42,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:42,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:42,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:42,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:42,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:42,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 05:11:42,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:42,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:42,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:42,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 47 [2020-10-14 05:11:42,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:11:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:42,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:42,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:42,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:42,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:42,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 05:11:42,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:42,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:42,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:42,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:11:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:42,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:42,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:11:42,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:42,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 05:11:42,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:42,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:42,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 05:11:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:42,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:11:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:11:43,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:43,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:43,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:43,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:43,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:43,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 05:11:43,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:43,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:11:43,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:11:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:43,262 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:11:43,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316125974] [2020-10-14 05:11:43,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:11:43,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-14 05:11:43,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185907258] [2020-10-14 05:11:43,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 05:11:43,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:43,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 05:11:43,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-14 05:11:43,268 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 13 states. [2020-10-14 05:11:43,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:43,717 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-14 05:11:43,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 05:11:43,717 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-14 05:11:43,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:43,719 INFO L225 Difference]: With dead ends: 45 [2020-10-14 05:11:43,719 INFO L226 Difference]: Without dead ends: 43 [2020-10-14 05:11:43,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2020-10-14 05:11:43,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-14 05:11:43,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-10-14 05:11:43,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 05:11:43,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-14 05:11:43,727 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 46 [2020-10-14 05:11:43,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:43,728 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-14 05:11:43,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 05:11:43,728 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-14 05:11:43,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 05:11:43,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:43,729 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:43,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 05:11:43,730 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:43,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:43,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1717386418, now seen corresponding path program 1 times [2020-10-14 05:11:43,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:43,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411740866] [2020-10-14 05:11:43,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:43,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:44,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:45,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:46,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:46,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-14 05:11:46,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:11:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3154 [2020-10-14 05:11:46,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:46,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:11:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-14 05:11:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 05:11:46,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:46,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:46,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:46,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:46,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:11:46,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:46,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:46,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:46,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:46,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:46,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:46,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:47,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:47,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:11:47,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:47,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:11:47,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:47,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:47,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:47,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:47,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:47,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:47,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:47,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:11:47,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:47,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:47,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:47,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:11:47,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:47,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:47,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:47,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:47,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:47,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:11:47,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:47,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:47,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:47,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:47,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:47,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:11:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:47,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:47,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:47,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:11:47,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:47,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 05:11:47,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:47,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:11:47,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:47,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 05:11:47,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:47,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:47,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:47,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:47,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:47,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:47,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:47,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-14 05:11:47,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:47,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:11:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:47,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-14 05:11:47,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411740866] [2020-10-14 05:11:47,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 05:11:47,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-14 05:11:47,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527784821] [2020-10-14 05:11:47,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 05:11:47,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:47,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 05:11:47,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:11:47,310 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 11 states. [2020-10-14 05:11:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:47,703 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-10-14 05:11:47,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 05:11:47,704 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-10-14 05:11:47,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:47,705 INFO L225 Difference]: With dead ends: 43 [2020-10-14 05:11:47,706 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 05:11:47,706 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-14 05:11:47,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 05:11:47,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-14 05:11:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 05:11:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-10-14 05:11:47,713 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 46 [2020-10-14 05:11:47,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:47,714 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-10-14 05:11:47,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 05:11:47,714 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-10-14 05:11:47,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:11:47,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:47,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:47,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 05:11:47,716 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:47,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:47,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1142561111, now seen corresponding path program 1 times [2020-10-14 05:11:47,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:47,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948432575] [2020-10-14 05:11:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:47,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:48,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:48,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:11:48,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:48,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1198 [2020-10-14 05:11:48,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:48,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-14 05:11:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:11:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 05:11:48,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:49,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:49,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:49,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:49,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:49,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:11:49,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:49,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:49,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:49,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:49,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:49,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:49,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:49,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:11:49,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-14 05:11:49,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:49,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:11:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:49,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 05:11:49,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:49,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:49,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:49,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:11:49,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:49,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:11:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:49,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:49,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:11:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:49,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:49,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:49,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:49,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:49,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:11:49,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:49,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:49,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:11:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:11:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:11:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:49,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:49,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:49,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:11:49,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:49,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 05:11:49,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:49,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:11:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:11:49,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:11:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:50,361 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 50 [2020-10-14 05:11:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:11:50,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:50,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:50,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:50,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:50,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:50,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 05:11:50,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:50,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:50,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:11:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:11:50,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:11:50,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:51,043 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-14 05:11:51,060 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 05:11:51,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948432575] [2020-10-14 05:11:51,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:11:51,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 05:11:51,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958763517] [2020-10-14 05:11:51,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 05:11:51,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:11:51,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 05:11:51,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-14 05:11:51,063 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 23 states. [2020-10-14 05:11:52,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:11:52,331 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2020-10-14 05:11:52,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 05:11:52,331 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 48 [2020-10-14 05:11:52,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:11:52,332 INFO L225 Difference]: With dead ends: 47 [2020-10-14 05:11:52,333 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 05:11:52,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=123, Invalid=1209, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:11:52,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 05:11:52,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-14 05:11:52,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 05:11:52,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-14 05:11:52,340 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 48 [2020-10-14 05:11:52,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:11:52,341 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-14 05:11:52,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-14 05:11:52,341 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-14 05:11:52,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-14 05:11:52,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:11:52,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:11:52,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 05:11:52,342 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:11:52,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:11:52,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1142559437, now seen corresponding path program 1 times [2020-10-14 05:11:52,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:11:52,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605678320] [2020-10-14 05:11:52,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:11:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:52,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:53,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:53,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:56,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:56,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 05:11:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:11:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3901 [2020-10-14 05:11:56,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:56,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-14 05:11:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:11:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-14 05:11:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:56,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:11:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:56,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:56,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:56,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:11:56,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:56,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:11:56,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:56,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:11:56,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:56,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:11:56,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:11:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:56,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:56,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:56,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:11:56,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:11:56,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-14 05:11:56,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:56,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:11:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:56,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:11:56,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:56,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:11:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:56,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:56,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:56,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:56,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:11:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:11:56,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:56,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:11:56,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:11:56,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:11:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:11:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:56,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:56,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:56,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:11:56,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:56,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 05:11:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:56,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:11:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:11:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:11:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:11:57,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:11:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:11:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:11:57,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:11:57,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:11:57,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:11:57,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 05:11:57,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:11:57,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:11:57,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 05:11:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:11:57,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:11:57,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:08,028 WARN L193 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 339 DAG size of output: 207 [2020-10-14 05:12:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:12:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:08,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:08,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:08,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:08,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:08,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-14 05:12:08,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:08,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:12:08,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:08,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:12:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:12:08,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605678320] [2020-10-14 05:12:08,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:12:08,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-14 05:12:08,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192026281] [2020-10-14 05:12:08,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-14 05:12:08,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:08,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-14 05:12:08,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2020-10-14 05:12:08,967 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 25 states. [2020-10-14 05:12:11,617 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 207 [2020-10-14 05:12:14,366 WARN L193 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 212 [2020-10-14 05:12:16,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:16,758 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-14 05:12:16,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 05:12:16,759 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 48 [2020-10-14 05:12:16,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:16,760 INFO L225 Difference]: With dead ends: 48 [2020-10-14 05:12:16,761 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 05:12:16,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=132, Invalid=1128, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:12:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 05:12:16,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-10-14 05:12:16,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 05:12:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-14 05:12:16,769 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 48 [2020-10-14 05:12:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:16,770 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-14 05:12:16,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-14 05:12:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-14 05:12:16,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:12:16,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:16,771 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:16,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 05:12:16,772 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:16,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:16,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1510353742, now seen corresponding path program 2 times [2020-10-14 05:12:16,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:16,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242418342] [2020-10-14 05:12:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:17,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:12:20,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:20,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3376 [2020-10-14 05:12:20,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:12:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:12:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-14 05:12:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:12:20,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:20,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:20,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:20,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:20,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:20,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:12:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:20,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:20,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:20,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:20,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:20,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 05:12:20,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:20,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 05:12:20,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:20,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:12:20,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:21,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:12:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:21,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:21,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:21,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:21,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:12:21,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:21,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:12:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 05:12:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:12:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:21,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:21,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:21,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:21,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-14 05:12:21,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:21,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 05:12:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:21,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:12:21,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:12:21,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:21,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:21,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:21,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:12:21,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:21,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 05:12:21,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:21,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:12:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:21,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:12:21,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:21,986 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2020-10-14 05:12:23,006 WARN L193 SmtUtils]: Spent 686.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 103 [2020-10-14 05:12:23,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:12:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:23,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:23,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:23,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:23,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-14 05:12:23,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:23,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:12:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:12:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:23,694 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 39 [2020-10-14 05:12:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 17 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:12:23,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242418342] [2020-10-14 05:12:23,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:12:23,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-14 05:12:23,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475526824] [2020-10-14 05:12:23,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-14 05:12:23,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:23,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-14 05:12:23,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=699, Unknown=0, NotChecked=0, Total=756 [2020-10-14 05:12:23,718 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 28 states. [2020-10-14 05:12:24,308 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 55 [2020-10-14 05:12:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:26,320 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2020-10-14 05:12:26,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:12:26,321 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 50 [2020-10-14 05:12:26,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:26,323 INFO L225 Difference]: With dead ends: 52 [2020-10-14 05:12:26,323 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 05:12:26,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=149, Invalid=1657, Unknown=0, NotChecked=0, Total=1806 [2020-10-14 05:12:26,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 05:12:26,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-10-14 05:12:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:12:26,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 49 transitions. [2020-10-14 05:12:26,334 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 49 transitions. Word has length 50 [2020-10-14 05:12:26,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:26,335 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 49 transitions. [2020-10-14 05:12:26,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-14 05:12:26,335 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 49 transitions. [2020-10-14 05:12:26,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-14 05:12:26,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:26,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:26,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 05:12:26,337 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:26,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:26,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1510355416, now seen corresponding path program 2 times [2020-10-14 05:12:26,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:26,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50091741] [2020-10-14 05:12:26,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:26,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:28,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:28,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 05:12:28,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:28,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2140 [2020-10-14 05:12:28,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:28,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-14 05:12:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:12:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-14 05:12:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:29,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:29,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:29,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:12:29,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:29,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:29,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:29,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:29,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:29,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:29,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:29,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:12:29,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:29,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:29,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:29,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:29,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-14 05:12:29,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:29,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 05:12:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:29,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:12:29,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:29,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:12:29,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:29,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:29,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:29,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:12:29,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:29,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:29,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 05:12:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 05:12:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:29,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:12:29,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:29,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:29,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 05:12:29,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:29,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:12:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:29,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:12:29,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:12:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:29,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:29,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:12:29,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:29,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 05:12:29,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:29,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:12:29,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:29,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:12:29,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:31,175 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2020-10-14 05:12:31,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:12:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:31,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:31,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:31,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:31,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:31,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 05:12:31,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:31,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:12:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:31,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:12:31,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:12:31,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:12:31,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50091741] [2020-10-14 05:12:31,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:12:31,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-14 05:12:31,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192180886] [2020-10-14 05:12:31,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-14 05:12:31,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:31,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-14 05:12:31,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-14 05:12:31,749 INFO L87 Difference]: Start difference. First operand 44 states and 49 transitions. Second operand 27 states. [2020-10-14 05:12:32,937 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-14 05:12:33,870 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 05:12:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:34,153 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-10-14 05:12:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 05:12:34,154 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2020-10-14 05:12:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:34,155 INFO L225 Difference]: With dead ends: 50 [2020-10-14 05:12:34,155 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 05:12:34,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=158, Invalid=1564, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 05:12:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 05:12:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2020-10-14 05:12:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 05:12:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-14 05:12:34,167 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 50 [2020-10-14 05:12:34,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:34,167 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-14 05:12:34,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-14 05:12:34,168 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-14 05:12:34,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:12:34,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:34,170 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:34,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 05:12:34,171 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:34,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:34,171 INFO L82 PathProgramCache]: Analyzing trace with hash 249046349, now seen corresponding path program 3 times [2020-10-14 05:12:34,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:34,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1878085190] [2020-10-14 05:12:34,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:34,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:34,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:35,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:35,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:12:35,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1353 [2020-10-14 05:12:35,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:35,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-14 05:12:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:12:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:12:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:36,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:36,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:36,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:12:36,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:36,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:36,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:36,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:36,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:36,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:12:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:36,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:36,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:36,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:36,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-14 05:12:36,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:36,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:12:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:36,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:12:36,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:36,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:12:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:36,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:36,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 05:12:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:36,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:12:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:36,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:12:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:37,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:12:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:37,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:37,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:37,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:37,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 05:12:37,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:37,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:37,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:12:37,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:37,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:12:37,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:37,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:12:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:37,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:37,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:37,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:12:37,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:37,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 05:12:37,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:37,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:12:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:37,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:12:37,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:42,472 WARN L193 SmtUtils]: Spent 3.13 s on a formula simplification. DAG size of input: 336 DAG size of output: 142 [2020-10-14 05:12:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:12:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:42,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:42,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:42,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:42,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:42,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 05:12:42,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:42,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:12:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:42,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:12:42,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:42,912 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 31 [2020-10-14 05:12:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:12:42,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1878085190] [2020-10-14 05:12:42,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:12:42,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-14 05:12:42,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68369796] [2020-10-14 05:12:42,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-14 05:12:42,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:42,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-14 05:12:42,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2020-10-14 05:12:42,951 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 31 states. [2020-10-14 05:12:44,422 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-14 05:12:45,194 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2020-10-14 05:12:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:47,446 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-10-14 05:12:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-14 05:12:47,446 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 52 [2020-10-14 05:12:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:47,447 INFO L225 Difference]: With dead ends: 78 [2020-10-14 05:12:47,447 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 05:12:47,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=201, Invalid=2555, Unknown=0, NotChecked=0, Total=2756 [2020-10-14 05:12:47,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 05:12:47,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2020-10-14 05:12:47,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-14 05:12:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 69 transitions. [2020-10-14 05:12:47,463 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 69 transitions. Word has length 52 [2020-10-14 05:12:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:47,463 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 69 transitions. [2020-10-14 05:12:47,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-14 05:12:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 69 transitions. [2020-10-14 05:12:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-14 05:12:47,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:47,465 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:47,465 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 05:12:47,465 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:47,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:47,465 INFO L82 PathProgramCache]: Analyzing trace with hash 249044675, now seen corresponding path program 3 times [2020-10-14 05:12:47,466 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:47,466 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346164348] [2020-10-14 05:12:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 05:12:47,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:47,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-14 05:12:47,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:47,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:12:47,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:47,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:47,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:47,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:12:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:47,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:47,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 05:12:47,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:12:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:47,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:12:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:47,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 05:12:47,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:47,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:47,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:12:47,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:47,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:47,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:47,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:47,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:12:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:12:47,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 05:12:47,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:12:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 05:12:47,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:47,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:12:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:47,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:47,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:47,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:47,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 05:12:47,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:47,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:47,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:47,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-14 05:12:47,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346164348] [2020-10-14 05:12:47,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:12:47,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:12:47,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451898685] [2020-10-14 05:12:47,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:12:47,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:47,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:12:47,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:12:47,948 INFO L87 Difference]: Start difference. First operand 61 states and 69 transitions. Second operand 9 states. [2020-10-14 05:12:48,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:12:48,185 INFO L93 Difference]: Finished difference Result 69 states and 77 transitions. [2020-10-14 05:12:48,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 05:12:48,186 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-10-14 05:12:48,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:12:48,187 INFO L225 Difference]: With dead ends: 69 [2020-10-14 05:12:48,187 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 05:12:48,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-14 05:12:48,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 05:12:48,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2020-10-14 05:12:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 05:12:48,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-14 05:12:48,201 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 52 [2020-10-14 05:12:48,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:12:48,202 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-14 05:12:48,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:12:48,202 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-14 05:12:48,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:12:48,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:12:48,203 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:12:48,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 05:12:48,204 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:12:48,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:12:48,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1184580824, now seen corresponding path program 4 times [2020-10-14 05:12:48,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:12:48,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225241590] [2020-10-14 05:12:48,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:12:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:48,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:48,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:49,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:49,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:12:49,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:12:49,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-14 05:12:49,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:49,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-14 05:12:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:12:49,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 05:12:49,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:49,740 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2020-10-14 05:12:49,921 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 50 [2020-10-14 05:12:50,049 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2020-10-14 05:12:50,244 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 51 [2020-10-14 05:12:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:12:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:50,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:12:50,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:12:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:50,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:12:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:12:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:50,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:12:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:50,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:50,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:50,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:12:50,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-14 05:12:50,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:50,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:12:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:12:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:12:51,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:51,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:51,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:51,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:51,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 05:12:51,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:51,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:12:51,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:12:51,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:12:51,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:51,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:12:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:51,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:51,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:51,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:51,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:51,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:12:51,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:51,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:12:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:51,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:12:51,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:12:51,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:51,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:51,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:12:51,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:51,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 05:12:51,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:51,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:12:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:51,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:12:51,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:52,713 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-14 05:12:55,606 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 286 DAG size of output: 143 [2020-10-14 05:12:56,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:12:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:12:56,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:12:56,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:12:56,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:12:56,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:12:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:12:56,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:12:56,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:12:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:12:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:12:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:12:56,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:12:56,626 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2020-10-14 05:12:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:12:56,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225241590] [2020-10-14 05:12:56,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:12:56,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-14 05:12:56,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708297132] [2020-10-14 05:12:56,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-14 05:12:56,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:12:56,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-14 05:12:56,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=980, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 05:12:56,657 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 33 states. [2020-10-14 05:12:57,583 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-10-14 05:12:59,203 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-14 05:12:59,574 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-14 05:12:59,855 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-14 05:13:00,162 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 05:13:00,450 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-14 05:13:00,700 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-14 05:13:00,958 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-14 05:13:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:02,081 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-10-14 05:13:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:13:02,082 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 54 [2020-10-14 05:13:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:02,083 INFO L225 Difference]: With dead ends: 81 [2020-10-14 05:13:02,083 INFO L226 Difference]: Without dead ends: 79 [2020-10-14 05:13:02,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=216, Invalid=2646, Unknown=0, NotChecked=0, Total=2862 [2020-10-14 05:13:02,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-14 05:13:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2020-10-14 05:13:02,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 05:13:02,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2020-10-14 05:13:02,098 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 54 [2020-10-14 05:13:02,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:02,099 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2020-10-14 05:13:02,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-14 05:13:02,099 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2020-10-14 05:13:02,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-14 05:13:02,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:02,100 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:02,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 05:13:02,101 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:02,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:02,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1184582498, now seen corresponding path program 4 times [2020-10-14 05:13:02,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:02,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056514025] [2020-10-14 05:13:02,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:02,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:02,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:03,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:03,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 05:13:03,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:03,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-10-14 05:13:03,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:03,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-14 05:13:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:13:03,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 05:13:03,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:03,508 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2020-10-14 05:13:03,813 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 51 [2020-10-14 05:13:03,936 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-10-14 05:13:04,097 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 42 [2020-10-14 05:13:04,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:04,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:04,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:04,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:04,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:04,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:04,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:04,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:04,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:04,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:04,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:13:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:04,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:04,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:04,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:13:04,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:04,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 05:13:04,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:04,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:13:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:04,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:13:04,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:05,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:13:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:05,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:05,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:05,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:05,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:05,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:13:05,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:05,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:13:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:05,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:13:05,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:13:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:05,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:05,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:05,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:05,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:13:05,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:05,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:13:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:05,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:13:05,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:05,743 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-14 05:13:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:13:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:05,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:05,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:05,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:13:05,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:05,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 05:13:05,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:05,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:05,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:13:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:05,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:13:05,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 05:13:10,916 WARN L193 SmtUtils]: Spent 3.85 s on a formula simplification. DAG size of input: 250 DAG size of output: 142 [2020-10-14 05:13:11,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:13:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:11,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:11,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:11,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:13:11,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:11,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:13:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:13:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 32 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:13:11,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056514025] [2020-10-14 05:13:11,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:11,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-14 05:13:11,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642104514] [2020-10-14 05:13:11,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-14 05:13:11,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:11,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-14 05:13:11,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2020-10-14 05:13:11,889 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand 32 states. [2020-10-14 05:13:12,669 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-14 05:13:13,909 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-14 05:13:14,379 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-14 05:13:14,797 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 102 [2020-10-14 05:13:15,367 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 143 [2020-10-14 05:13:15,889 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 132 [2020-10-14 05:13:16,349 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 122 [2020-10-14 05:13:16,762 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 108 [2020-10-14 05:13:17,181 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-14 05:13:17,534 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-14 05:13:17,856 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-14 05:13:18,148 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2020-10-14 05:13:18,434 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-14 05:13:18,732 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-14 05:13:19,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:19,007 INFO L93 Difference]: Finished difference Result 79 states and 86 transitions. [2020-10-14 05:13:19,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 05:13:19,007 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 54 [2020-10-14 05:13:19,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:19,009 INFO L225 Difference]: With dead ends: 79 [2020-10-14 05:13:19,009 INFO L226 Difference]: Without dead ends: 76 [2020-10-14 05:13:19,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=230, Invalid=2740, Unknown=0, NotChecked=0, Total=2970 [2020-10-14 05:13:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-14 05:13:19,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2020-10-14 05:13:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 05:13:19,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-14 05:13:19,025 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 54 [2020-10-14 05:13:19,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:19,025 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-14 05:13:19,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-14 05:13:19,025 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-14 05:13:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:13:19,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:19,027 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:19,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 05:13:19,027 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:19,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:19,027 INFO L82 PathProgramCache]: Analyzing trace with hash -215792061, now seen corresponding path program 5 times [2020-10-14 05:13:19,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:19,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169861323] [2020-10-14 05:13:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:19,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:20,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:20,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:13:20,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:20,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-14 05:13:20,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:20,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-14 05:13:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:13:20,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 05:13:20,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:21,049 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2020-10-14 05:13:21,419 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 63 [2020-10-14 05:13:21,657 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 58 [2020-10-14 05:13:22,024 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 59 [2020-10-14 05:13:22,256 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-14 05:13:22,517 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 54 [2020-10-14 05:13:22,796 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2020-10-14 05:13:23,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:23,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:23,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:23,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:23,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:23,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:23,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:23,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:23,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:23,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:23,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:13:23,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:23,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:23,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:13:23,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:23,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:13:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:23,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:23,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:23,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:13:23,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:23,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:13:23,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:13:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:24,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:13:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:24,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:24,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:24,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:24,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:24,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 05:13:24,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:24,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:13:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:24,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:13:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:24,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:13:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:24,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:24,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:24,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:13:24,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:24,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-14 05:13:24,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:24,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:13:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:24,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:13:24,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:28,029 WARN L193 SmtUtils]: Spent 2.28 s on a formula simplification. DAG size of input: 275 DAG size of output: 147 [2020-10-14 05:13:28,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:13:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:28,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:28,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:28,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:28,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:28,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-14 05:13:28,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:28,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:13:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:28,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:13:28,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:29,124 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-14 05:13:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:13:29,157 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169861323] [2020-10-14 05:13:29,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:29,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-14 05:13:29,158 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070150630] [2020-10-14 05:13:29,158 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-14 05:13:29,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:29,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-14 05:13:29,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=1112, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 05:13:29,159 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 35 states. [2020-10-14 05:13:30,324 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-10-14 05:13:31,361 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2020-10-14 05:13:31,935 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2020-10-14 05:13:32,369 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 128 [2020-10-14 05:13:33,024 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 182 [2020-10-14 05:13:33,443 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 121 [2020-10-14 05:13:34,067 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 173 [2020-10-14 05:13:34,481 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 118 [2020-10-14 05:13:35,040 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 155 [2020-10-14 05:13:35,542 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 141 [2020-10-14 05:13:35,987 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 126 [2020-10-14 05:13:36,350 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 109 [2020-10-14 05:13:36,668 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2020-10-14 05:13:36,959 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 82 [2020-10-14 05:13:37,248 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2020-10-14 05:13:37,677 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 112 [2020-10-14 05:13:38,076 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2020-10-14 05:13:38,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:38,351 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-10-14 05:13:38,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:13:38,351 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 56 [2020-10-14 05:13:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:38,352 INFO L225 Difference]: With dead ends: 83 [2020-10-14 05:13:38,352 INFO L226 Difference]: Without dead ends: 81 [2020-10-14 05:13:38,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 14.8s TimeCoverageRelationStatistics Valid=241, Invalid=3299, Unknown=0, NotChecked=0, Total=3540 [2020-10-14 05:13:38,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-14 05:13:38,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 67. [2020-10-14 05:13:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 05:13:38,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-14 05:13:38,369 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 56 [2020-10-14 05:13:38,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:38,370 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-14 05:13:38,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-14 05:13:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-14 05:13:38,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 05:13:38,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:38,371 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:13:38,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 05:13:38,371 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:38,372 INFO L82 PathProgramCache]: Analyzing trace with hash -215793735, now seen corresponding path program 5 times [2020-10-14 05:13:38,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:38,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086076470] [2020-10-14 05:13:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:38,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:39,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 05:13:39,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:40,287 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 56 [2020-10-14 05:13:40,561 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2020-10-14 05:13:40,708 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2020-10-14 05:13:40,934 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2020-10-14 05:13:41,210 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-10-14 05:13:41,355 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-10-14 05:13:41,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:13:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:41,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:41,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:13:41,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:41,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:13:41,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:41,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:13:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:41,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:13:41,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:41,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:13:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:41,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:41,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:13:41,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:41,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-14 05:13:41,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:41,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:13:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:41,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:13:41,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:42,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:13:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:42,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:42,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:42,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:42,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:42,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-14 05:13:42,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:42,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:42,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:13:42,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:13:42,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:13:42,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:13:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:42,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:42,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:42,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:13:42,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:42,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:13:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:13:42,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:43,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:13:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:43,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:13:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:43,946 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-14 05:13:45,935 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 249 DAG size of output: 155 [2020-10-14 05:13:46,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:13:46,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:46,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:46,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:13:46,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:13:46,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:13:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:13:46,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:13:46,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:13:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:13:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:13:46,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:13:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:13:46,972 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 41 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:13:46,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086076470] [2020-10-14 05:13:46,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:13:46,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-14 05:13:46,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700985848] [2020-10-14 05:13:46,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-14 05:13:46,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:13:46,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-14 05:13:46,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1045, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 05:13:46,974 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 34 states. [2020-10-14 05:13:47,995 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-14 05:13:50,035 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-14 05:13:50,575 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 106 [2020-10-14 05:13:51,299 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 157 [2020-10-14 05:13:51,956 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 146 [2020-10-14 05:13:52,659 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 146 [2020-10-14 05:13:53,258 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 140 [2020-10-14 05:13:53,815 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 131 [2020-10-14 05:13:54,295 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-14 05:13:54,726 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 104 [2020-10-14 05:13:55,155 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 92 [2020-10-14 05:13:55,580 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-14 05:13:55,933 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 73 [2020-10-14 05:13:56,286 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2020-10-14 05:13:56,665 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2020-10-14 05:13:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:13:57,053 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2020-10-14 05:13:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:13:57,053 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 56 [2020-10-14 05:13:57,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:13:57,054 INFO L225 Difference]: With dead ends: 81 [2020-10-14 05:13:57,054 INFO L226 Difference]: Without dead ends: 78 [2020-10-14 05:13:57,055 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=245, Invalid=3061, Unknown=0, NotChecked=0, Total=3306 [2020-10-14 05:13:57,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-14 05:13:57,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2020-10-14 05:13:57,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-14 05:13:57,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-10-14 05:13:57,068 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 56 [2020-10-14 05:13:57,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:13:57,068 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-10-14 05:13:57,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-14 05:13:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-10-14 05:13:57,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-14 05:13:57,069 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:13:57,069 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2020-10-14 05:13:57,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 05:13:57,070 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:13:57,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:13:57,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1828809800, now seen corresponding path program 6 times [2020-10-14 05:13:57,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:13:57,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171593541] [2020-10-14 05:13:57,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:13:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:13:57,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:57,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:13:58,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:02,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:02,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 05:14:02,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 05:14:02,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 05:14:02,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:02,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:14:02,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:14:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 05:14:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 05:14:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:02,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:02,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:02,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:02,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:02,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:02,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:02,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:02,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:02,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:02,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:14:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:02,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:02,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 05:14:02,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:02,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-14 05:14:02,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:02,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:14:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-14 05:14:02,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-14 05:14:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:02,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:14:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:02,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:02,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:02,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:02,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:14:02,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:02,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:14:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:14:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 05:14:02,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:14:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:02,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:02,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:02,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:02,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:02,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:14:02,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:02,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:14:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:02,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:14:02,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:02,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 05:14:02,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:02,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:02,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:02,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:02,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:02,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 05:14:02,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:02,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 05:14:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:02,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:14:02,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 05:14:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:02,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:02,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:14:02,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:02,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 05:14:02,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:02,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:02,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 05:14:02,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:02,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:02,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:14:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:02,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:02,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:02,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:02,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:02,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 05:14:02,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:02,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:02,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:02,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-14 05:14:02,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171593541] [2020-10-14 05:14:02,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:02,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 05:14:02,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683302134] [2020-10-14 05:14:02,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 05:14:02,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:02,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 05:14:02,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-14 05:14:02,416 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 9 states. [2020-10-14 05:14:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:02,637 INFO L93 Difference]: Finished difference Result 82 states and 89 transitions. [2020-10-14 05:14:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 05:14:02,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-10-14 05:14:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:02,638 INFO L225 Difference]: With dead ends: 82 [2020-10-14 05:14:02,638 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 05:14:02,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-14 05:14:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 05:14:02,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-14 05:14:02,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 05:14:02,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2020-10-14 05:14:02,651 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 61 [2020-10-14 05:14:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:02,652 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2020-10-14 05:14:02,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 05:14:02,652 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2020-10-14 05:14:02,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:14:02,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:02,653 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:02,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 05:14:02,653 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:02,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:02,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1217694050, now seen corresponding path program 7 times [2020-10-14 05:14:02,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:02,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715980044] [2020-10-14 05:14:02,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:03,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:04,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:04,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 05:14:04,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:04,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-10-14 05:14:04,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:04,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-14 05:14:04,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:14:04,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 05:14:04,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:04,659 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-14 05:14:05,087 WARN L193 SmtUtils]: Spent 404.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2020-10-14 05:14:05,327 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 68 [2020-10-14 05:14:05,587 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 66 [2020-10-14 05:14:05,913 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 63 [2020-10-14 05:14:06,109 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2020-10-14 05:14:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:06,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:06,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:06,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:06,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:06,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:06,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:06,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:14:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:06,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:06,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:06,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:14:06,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:06,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 05:14:06,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:06,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:14:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:06,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:14:06,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:07,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:14:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:07,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:07,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 05:14:07,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:07,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:14:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:14:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:14:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:07,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:07,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:07,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:07,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:07,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 05:14:07,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:07,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:14:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:14:07,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:14:07,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:08,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:14:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:08,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:08,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:14:08,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 05:14:08,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:08,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:14:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:14:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:14:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:09,476 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-10-14 05:14:16,152 WARN L193 SmtUtils]: Spent 5.69 s on a formula simplification. DAG size of input: 359 DAG size of output: 174 [2020-10-14 05:14:16,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:14:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:16,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:16,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:16,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:16,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 05:14:16,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:16,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:14:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:14:16,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:14:16,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:16,563 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-10-14 05:14:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 4 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:14:16,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715980044] [2020-10-14 05:14:16,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:16,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-14 05:14:16,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604452337] [2020-10-14 05:14:16,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-14 05:14:16,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:16,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-14 05:14:16,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1249, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 05:14:16,601 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 37 states. [2020-10-14 05:14:17,723 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-10-14 05:14:19,070 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 38 [2020-10-14 05:14:19,643 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-14 05:14:20,173 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 135 [2020-10-14 05:14:20,979 WARN L193 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 195 [2020-10-14 05:14:21,523 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2020-10-14 05:14:22,312 WARN L193 SmtUtils]: Spent 598.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 204 [2020-10-14 05:14:22,729 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 116 [2020-10-14 05:14:23,203 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 143 [2020-10-14 05:14:23,619 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 126 [2020-10-14 05:14:23,992 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 114 [2020-10-14 05:14:24,337 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 104 [2020-10-14 05:14:24,673 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-14 05:14:25,019 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2020-10-14 05:14:25,364 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-14 05:14:25,689 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2020-10-14 05:14:26,034 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 81 [2020-10-14 05:14:26,408 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 107 [2020-10-14 05:14:26,791 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 99 [2020-10-14 05:14:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:14:26,816 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-10-14 05:14:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-14 05:14:26,825 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 58 [2020-10-14 05:14:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:14:26,826 INFO L225 Difference]: With dead ends: 59 [2020-10-14 05:14:26,826 INFO L226 Difference]: Without dead ends: 57 [2020-10-14 05:14:26,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=248, Invalid=3534, Unknown=0, NotChecked=0, Total=3782 [2020-10-14 05:14:26,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-14 05:14:26,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-10-14 05:14:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 05:14:26,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-10-14 05:14:26,843 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 58 [2020-10-14 05:14:26,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:14:26,844 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-10-14 05:14:26,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-14 05:14:26,844 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-10-14 05:14:26,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 05:14:26,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:14:26,845 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:14:26,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 05:14:26,846 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:14:26,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:14:26,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1217695724, now seen corresponding path program 6 times [2020-10-14 05:14:26,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:14:26,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515114024] [2020-10-14 05:14:26,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:14:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:26,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:28,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:28,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 05:14:28,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:14:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1559 [2020-10-14 05:14:28,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:28,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:28,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-14 05:14:28,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:14:28,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-14 05:14:28,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:28,921 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 45 [2020-10-14 05:14:29,231 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 47 [2020-10-14 05:14:30,318 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 319 DAG size of output: 73 [2020-10-14 05:14:31,403 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 316 DAG size of output: 72 [2020-10-14 05:14:32,134 WARN L193 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 76 [2020-10-14 05:14:32,427 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 63 [2020-10-14 05:14:32,626 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 61 [2020-10-14 05:14:32,844 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-14 05:14:33,135 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 40 [2020-10-14 05:14:33,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:14:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:33,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:33,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:33,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:14:33,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:33,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:14:33,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:33,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:14:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:33,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:14:33,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:33,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:14:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:33,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:33,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:33,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:14:33,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:33,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 05:14:33,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:33,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:14:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:33,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:14:33,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:34,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:14:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:34,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:34,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:34,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:34,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:34,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 05:14:34,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:34,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:34,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:14:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:14:34,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:14:34,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:34,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:14:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:34,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:34,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:34,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:34,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:34,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 05:14:34,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:34,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:34,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:14:34,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:14:34,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:14:34,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:34,978 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-14 05:14:34,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:14:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:35,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:14:35,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:37,402 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-10-14 05:14:55,273 WARN L193 SmtUtils]: Spent 16.09 s on a formula simplification. DAG size of input: 645 DAG size of output: 160 [2020-10-14 05:14:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:14:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:14:57,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:14:57,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:14:57,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:14:57,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:14:57,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:14:57,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:14:57,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:14:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:14:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:14:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:14:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:14:57,928 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 31 [2020-10-14 05:14:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:14:57,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515114024] [2020-10-14 05:14:57,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:14:57,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-14 05:14:57,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844360506] [2020-10-14 05:14:57,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-14 05:14:57,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:14:57,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-14 05:14:57,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1177, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 05:14:57,966 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 36 states. [2020-10-14 05:15:00,911 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-14 05:15:01,691 WARN L193 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 134 [2020-10-14 05:15:02,930 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 205 DAG size of output: 205 [2020-10-14 05:15:03,986 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 196 [2020-10-14 05:15:04,939 WARN L193 SmtUtils]: Spent 735.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 190 [2020-10-14 05:15:05,885 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 179 [2020-10-14 05:15:06,722 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 167 [2020-10-14 05:15:07,435 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 148 [2020-10-14 05:15:08,074 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 134 [2020-10-14 05:15:08,629 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 118 [2020-10-14 05:15:09,184 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-14 05:15:09,689 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-14 05:15:10,199 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 98 [2020-10-14 05:15:10,670 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-14 05:15:11,146 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2020-10-14 05:15:11,822 WARN L193 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 131 [2020-10-14 05:15:11,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:11,844 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-10-14 05:15:11,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 05:15:11,846 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 58 [2020-10-14 05:15:11,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:11,847 INFO L225 Difference]: With dead ends: 57 [2020-10-14 05:15:11,847 INFO L226 Difference]: Without dead ends: 54 [2020-10-14 05:15:11,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 38.1s TimeCoverageRelationStatistics Valid=244, Invalid=3178, Unknown=0, NotChecked=0, Total=3422 [2020-10-14 05:15:11,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-14 05:15:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-10-14 05:15:11,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-14 05:15:11,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2020-10-14 05:15:11,860 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 58 [2020-10-14 05:15:11,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:11,861 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2020-10-14 05:15:11,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-14 05:15:11,861 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2020-10-14 05:15:11,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:15:11,862 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:11,862 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:11,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 05:15:11,862 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:11,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:11,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1972831175, now seen corresponding path program 8 times [2020-10-14 05:15:11,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:11,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914529812] [2020-10-14 05:15:11,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:11,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:12,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:14,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:14,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 05:15:14,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 05:15:14,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2308 [2020-10-14 05:15:14,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:14,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-14 05:15:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 05:15:14,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 05:15:14,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:14,911 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2020-10-14 05:15:15,347 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 62 [2020-10-14 05:15:15,596 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 61 [2020-10-14 05:15:15,753 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2020-10-14 05:15:16,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 05:15:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:16,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 05:15:16,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:16,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-14 05:15:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:16,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:16,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:16,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 05:15:16,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:16,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 05:15:16,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:16,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 05:15:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:16,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 05:15:16,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:17,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-14 05:15:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:17,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:17,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:17,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:15:17,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 05:15:17,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:17,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 05:15:17,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 05:15:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 05:15:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:17,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-14 05:15:17,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:17,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:17,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:17,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:15:17,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:17,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 05:15:17,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:17,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 05:15:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:15:17,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:15:17,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:18,258 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-14 05:15:18,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-14 05:15:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:18,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:18,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 05:15:18,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:18,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-14 05:15:18,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:18,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 05:15:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:15:18,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 05:15:18,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:25,807 WARN L193 SmtUtils]: Spent 5.25 s on a formula simplification. DAG size of input: 326 DAG size of output: 164 [2020-10-14 05:15:25,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-14 05:15:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:25,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:25,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 05:15:25,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-14 05:15:25,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 05:15:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 05:15:25,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 05:15:25,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 05:15:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 05:15:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 05:15:25,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 05:15:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 05:15:26,342 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-14 05:15:26,378 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 05:15:26,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914529812] [2020-10-14 05:15:26,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 05:15:26,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-14 05:15:26,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543637854] [2020-10-14 05:15:26,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-14 05:15:26,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 05:15:26,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-14 05:15:26,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1394, Unknown=0, NotChecked=0, Total=1482 [2020-10-14 05:15:26,380 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand 39 states. [2020-10-14 05:15:29,254 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37 [2020-10-14 05:15:30,146 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-14 05:15:30,596 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-14 05:15:30,950 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 05:15:31,409 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 165 [2020-10-14 05:15:31,733 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-14 05:15:32,030 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 05:15:32,322 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-14 05:15:34,820 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-14 05:15:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 05:15:35,131 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-10-14 05:15:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-14 05:15:35,135 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 60 [2020-10-14 05:15:35,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 05:15:35,136 INFO L225 Difference]: With dead ends: 61 [2020-10-14 05:15:35,136 INFO L226 Difference]: Without dead ends: 59 [2020-10-14 05:15:35,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=267, Invalid=4023, Unknown=0, NotChecked=0, Total=4290 [2020-10-14 05:15:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-14 05:15:35,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-10-14 05:15:35,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-14 05:15:35,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-14 05:15:35,151 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 60 [2020-10-14 05:15:35,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 05:15:35,151 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-14 05:15:35,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-14 05:15:35,152 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-14 05:15:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 05:15:35,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 05:15:35,152 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 05:15:35,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 05:15:35,153 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 05:15:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 05:15:35,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1972832849, now seen corresponding path program 7 times [2020-10-14 05:15:35,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 05:15:35,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085677998] [2020-10-14 05:15:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 05:15:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 05:15:35,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 05:15:35,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking...