/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=BIGGEST --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/heap-data/hash_fun.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:38:15,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:38:15,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:38:15,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:38:15,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:38:15,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:38:15,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:38:15,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:38:15,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:38:15,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:38:15,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:38:15,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:38:15,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:38:15,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:38:15,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:38:15,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:38:15,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:38:15,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:38:15,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:38:15,982 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:38:15,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:38:15,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:38:15,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:38:15,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:38:16,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:38:16,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:38:16,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:38:16,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:38:16,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:38:16,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:38:16,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:38:16,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:38:16,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:38:16,007 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:38:16,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:38:16,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:38:16,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:38:16,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:38:16,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:38:16,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:38:16,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:38:16,013 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 [2020-10-12 15:38:16,052 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:38:16,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:38:16,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:38:16,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:38:16,055 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:38:16,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:38:16,056 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:38:16,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:38:16,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:38:16,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:38:16,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:38:16,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:38:16,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:38:16,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:38:16,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:38:16,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:38:16,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:38:16,059 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:38:16,059 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:38:16,060 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:38:16,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:38:16,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:38:16,060 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:38:16,060 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:38:16,060 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:38:16,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:38:16,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:38:16,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:38:16,061 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:38:16,061 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:38:16,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:38:16,400 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:38:16,403 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:38:16,405 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:38:16,406 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:38:16,406 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/hash_fun.i [2020-10-12 15:38:16,464 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/611c7fe5c/01a77ccb81144ed5af50373947d24bbb/FLAG3718fe27a [2020-10-12 15:38:16,972 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:38:16,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/hash_fun.i [2020-10-12 15:38:16,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/611c7fe5c/01a77ccb81144ed5af50373947d24bbb/FLAG3718fe27a [2020-10-12 15:38:17,251 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/611c7fe5c/01a77ccb81144ed5af50373947d24bbb [2020-10-12 15:38:17,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:38:17,263 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:38:17,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:17,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:38:17,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:38:17,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424316e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17, skipping insertion in model container [2020-10-12 15:38:17,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:38:17,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:38:17,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:17,749 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:38:17,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:38:17,884 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:38:17,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17 WrapperNode [2020-10-12 15:38:17,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:38:17,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:38:17,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:38:17,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:38:17,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,936 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (1/1) ... [2020-10-12 15:38:17,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:38:17,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:38:17,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:38:17,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:38:17,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (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 [2020-10-12 15:38:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:38:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:38:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-12 15:38:18,009 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-12 15:38:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_fun [2020-10-12 15:38:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2020-10-12 15:38:18,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:38:18,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 15:38:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:38:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-12 15:38:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-12 15:38:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-12 15:38:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-12 15:38:18,012 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-12 15:38:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-12 15:38:18,013 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-12 15:38:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-12 15:38:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-12 15:38:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-12 15:38:18,014 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-12 15:38:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-12 15:38:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-12 15:38:18,015 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-12 15:38:18,016 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-12 15:38:18,017 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-12 15:38:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-12 15:38:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-12 15:38:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-12 15:38:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-12 15:38:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-12 15:38:18,018 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-12 15:38:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-12 15:38:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-12 15:38:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-12 15:38:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-12 15:38:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-12 15:38:18,019 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-12 15:38:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-12 15:38:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-12 15:38:18,020 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-12 15:38:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-12 15:38:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-12 15:38:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-12 15:38:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-12 15:38:18,022 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-12 15:38:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-12 15:38:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-12 15:38:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-12 15:38:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-12 15:38:18,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-12 15:38:18,025 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-12 15:38:18,025 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-12 15:38:18,025 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-12 15:38:18,025 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-12 15:38:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-12 15:38:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-12 15:38:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-12 15:38:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-12 15:38:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-12 15:38:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-12 15:38:18,026 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-12 15:38:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 15:38:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-12 15:38:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-12 15:38:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-12 15:38:18,027 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-12 15:38:18,028 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-12 15:38:18,029 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-12 15:38:18,029 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-12 15:38:18,029 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-12 15:38:18,030 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 15:38:18,030 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-12 15:38:18,031 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-12 15:38:18,031 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-12 15:38:18,032 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-12 15:38:18,032 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-12 15:38:18,032 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-12 15:38:18,032 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-12 15:38:18,032 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-12 15:38:18,032 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-12 15:38:18,032 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-12 15:38:18,033 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-12 15:38:18,033 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-12 15:38:18,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-12 15:38:18,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-12 15:38:18,033 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-12 15:38:18,033 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-12 15:38:18,033 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-12 15:38:18,033 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-12 15:38:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-12 15:38:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-12 15:38:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-12 15:38:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-12 15:38:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-12 15:38:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-12 15:38:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-12 15:38:18,034 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-12 15:38:18,035 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure hash_fun [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2020-10-12 15:38:18,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 15:38:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-12 15:38:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-12 15:38:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:38:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:38:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:38:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-12 15:38:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:38:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:38:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:38:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:38:18,507 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:38:18,508 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 15:38:18,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:18 BoogieIcfgContainer [2020-10-12 15:38:18,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:38:18,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:38:18,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:38:18,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:38:18,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:38:17" (1/3) ... [2020-10-12 15:38:18,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17163021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:18, skipping insertion in model container [2020-10-12 15:38:18,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:38:17" (2/3) ... [2020-10-12 15:38:18,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17163021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:38:18, skipping insertion in model container [2020-10-12 15:38:18,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:38:18" (3/3) ... [2020-10-12 15:38:18,521 INFO L109 eAbstractionObserver]: Analyzing ICFG hash_fun.i [2020-10-12 15:38:18,532 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:38:18,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:38:18,555 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:38:18,580 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:38:18,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:38:18,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:38:18,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:38:18,581 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:38:18,581 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:38:18,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:38:18,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:38:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 15:38:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 15:38:18,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:18,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:18,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:18,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:18,617 INFO L82 PathProgramCache]: Analyzing trace with hash 58523941, now seen corresponding path program 1 times [2020-10-12 15:38:18,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:18,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620547600] [2020-10-12 15:38:18,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:18,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:18,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:18,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 15:38:18,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-12 15:38:19,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:19,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 15:38:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:19,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 15:38:19,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:38:19,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:19,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:19,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:19,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:19,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:38:19,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:19,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:19,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:19,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620547600] [2020-10-12 15:38:19,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:38:19,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 15:38:19,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891041038] [2020-10-12 15:38:19,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 15:38:19,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:19,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 15:38:19,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:38:19,178 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-10-12 15:38:19,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:19,359 INFO L93 Difference]: Finished difference Result 53 states and 71 transitions. [2020-10-12 15:38:19,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 15:38:19,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-12 15:38:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:19,373 INFO L225 Difference]: With dead ends: 53 [2020-10-12 15:38:19,373 INFO L226 Difference]: Without dead ends: 33 [2020-10-12 15:38:19,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 15:38:19,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-12 15:38:19,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-12 15:38:19,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-12 15:38:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-12 15:38:19,429 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2020-10-12 15:38:19,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:19,430 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-12 15:38:19,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 15:38:19,430 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-12 15:38:19,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:38:19,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:19,432 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:38:19,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:38:19,433 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:19,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:19,433 INFO L82 PathProgramCache]: Analyzing trace with hash 479588754, now seen corresponding path program 1 times [2020-10-12 15:38:19,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:19,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933554485] [2020-10-12 15:38:19,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:19,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:19,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:19,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:38:19,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 442 [2020-10-12 15:38:19,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:19,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-12 15:38:19,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:20,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:20,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:20,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:20,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:38:20,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:20,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:20,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:20,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:20,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:20,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:20,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:20,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:38:20,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:20,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:20,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:20,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:20,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 15:38:20,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:38:20,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:20,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:20,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:20,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-12 15:38:20,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:20,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:20,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:20,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933554485] [2020-10-12 15:38:20,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:20,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:20,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53103860] [2020-10-12 15:38:20,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:20,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:20,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:20,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:20,226 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 9 states. [2020-10-12 15:38:20,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:20,580 INFO L93 Difference]: Finished difference Result 66 states and 81 transitions. [2020-10-12 15:38:20,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:20,581 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-12 15:38:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:20,583 INFO L225 Difference]: With dead ends: 66 [2020-10-12 15:38:20,583 INFO L226 Difference]: Without dead ends: 59 [2020-10-12 15:38:20,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:20,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-12 15:38:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-10-12 15:38:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 15:38:20,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-10-12 15:38:20,597 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 26 [2020-10-12 15:38:20,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:20,598 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-10-12 15:38:20,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:20,598 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-10-12 15:38:20,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 15:38:20,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:20,599 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:38:20,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:38:20,617 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:20,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:20,618 INFO L82 PathProgramCache]: Analyzing trace with hash 479586832, now seen corresponding path program 1 times [2020-10-12 15:38:20,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:20,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333870790] [2020-10-12 15:38:20,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:20,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:20,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:20,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 15:38:20,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:20,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-12 15:38:20,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:20,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 15:38:20,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:20,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:20,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:20,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:20,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:20,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:38:20,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:20,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:20,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:20,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:21,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:21,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:21,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:38:21,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:21,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:21,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:21,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:38:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:21,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:21,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-12 15:38:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:21,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:21,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:21,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:21,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333870790] [2020-10-12 15:38:21,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:21,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 15:38:21,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354266591] [2020-10-12 15:38:21,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 15:38:21,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:21,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 15:38:21,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-12 15:38:21,124 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 9 states. [2020-10-12 15:38:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:21,428 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2020-10-12 15:38:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:21,428 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-12 15:38:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:21,430 INFO L225 Difference]: With dead ends: 57 [2020-10-12 15:38:21,430 INFO L226 Difference]: Without dead ends: 55 [2020-10-12 15:38:21,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-12 15:38:21,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-12 15:38:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 36. [2020-10-12 15:38:21,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-12 15:38:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-12 15:38:21,448 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2020-10-12 15:38:21,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:21,448 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-12 15:38:21,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 15:38:21,449 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-12 15:38:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 15:38:21,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:21,451 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-12 15:38:21,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 15:38:21,452 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:21,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:21,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1071199269, now seen corresponding path program 1 times [2020-10-12 15:38:21,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:21,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581146230] [2020-10-12 15:38:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:21,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:21,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:22,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 15:38:22,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:22,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-10-12 15:38:22,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:22,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 15:38:22,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:22,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 15:38:22,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 15:38:22,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:22,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:22,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:22,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:22,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:38:22,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:22,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:22,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:22,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:22,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:22,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:22,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:22,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:22,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:38:22,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:22,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:22,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:22,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:22,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:38:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:22,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:22,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:22,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:22,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-12 15:38:22,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:22,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:22,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:22,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:23,765 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 91 [2020-10-12 15:38:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:38:23,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581146230] [2020-10-12 15:38:23,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:23,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 15:38:23,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452028479] [2020-10-12 15:38:23,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 15:38:23,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:23,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 15:38:23,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-12 15:38:23,783 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 11 states. [2020-10-12 15:38:24,194 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-10-12 15:38:25,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:25,043 INFO L93 Difference]: Finished difference Result 58 states and 72 transitions. [2020-10-12 15:38:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 15:38:25,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-12 15:38:25,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:25,047 INFO L225 Difference]: With dead ends: 58 [2020-10-12 15:38:25,047 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 15:38:25,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:38:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 15:38:25,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 15:38:25,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 15:38:25,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2020-10-12 15:38:25,058 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 31 [2020-10-12 15:38:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:25,058 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2020-10-12 15:38:25,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 15:38:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2020-10-12 15:38:25,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:38:25,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:25,060 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:25,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 15:38:25,060 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:25,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:25,061 INFO L82 PathProgramCache]: Analyzing trace with hash 582023166, now seen corresponding path program 2 times [2020-10-12 15:38:25,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:25,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821153493] [2020-10-12 15:38:25,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:38:25,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:25,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 565 [2020-10-12 15:38:25,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:38:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 15:38:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:25,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:25,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:25,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:25,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:25,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:25,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:38:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:25,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:38:25,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:25,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:38:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:25,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:38:25,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:25,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:25,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:25,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:38:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:25,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:25,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-12 15:38:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 15:38:26,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821153493] [2020-10-12 15:38:26,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:26,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:26,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186200085] [2020-10-12 15:38:26,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:26,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:26,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:26,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:26,072 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand 12 states. [2020-10-12 15:38:26,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:26,839 INFO L93 Difference]: Finished difference Result 88 states and 109 transitions. [2020-10-12 15:38:26,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:38:26,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-12 15:38:26,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:26,842 INFO L225 Difference]: With dead ends: 88 [2020-10-12 15:38:26,842 INFO L226 Difference]: Without dead ends: 81 [2020-10-12 15:38:26,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:38:26,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-12 15:38:26,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 47. [2020-10-12 15:38:26,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 15:38:26,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2020-10-12 15:38:26,854 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 44 [2020-10-12 15:38:26,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:26,855 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2020-10-12 15:38:26,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:26,855 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2020-10-12 15:38:26,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 15:38:26,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:26,856 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:26,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 15:38:26,857 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:26,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:26,857 INFO L82 PathProgramCache]: Analyzing trace with hash 582021244, now seen corresponding path program 1 times [2020-10-12 15:38:26,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:26,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317287481] [2020-10-12 15:38:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:26,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 15:38:27,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-12 15:38:27,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 15:38:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:27,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 15:38:27,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:27,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:27,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:27,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:27,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:27,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:27,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:27,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:27,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:27,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:27,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:27,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:38:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:27,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 15:38:27,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:27,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:27,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:27,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:27,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:38:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:27,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:38:27,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:27,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:38:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:27,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:27,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 15:38:27,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:27,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:27,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 15:38:27,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317287481] [2020-10-12 15:38:27,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:27,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 15:38:27,737 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950348766] [2020-10-12 15:38:27,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 15:38:27,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:27,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 15:38:27,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 15:38:27,739 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand 12 states. [2020-10-12 15:38:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:28,456 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2020-10-12 15:38:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 15:38:28,457 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 44 [2020-10-12 15:38:28,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:28,458 INFO L225 Difference]: With dead ends: 79 [2020-10-12 15:38:28,460 INFO L226 Difference]: Without dead ends: 77 [2020-10-12 15:38:28,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-10-12 15:38:28,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-12 15:38:28,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 48. [2020-10-12 15:38:28,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-12 15:38:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-12 15:38:28,473 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 44 [2020-10-12 15:38:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:28,474 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-12 15:38:28,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 15:38:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-12 15:38:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-12 15:38:28,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:28,481 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:28,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 15:38:28,482 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:28,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1212868847, now seen corresponding path program 3 times [2020-10-12 15:38:28,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:28,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542636079] [2020-10-12 15:38:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:28,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:29,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:30,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:31,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:31,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-12 15:38:31,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:38:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2629 [2020-10-12 15:38:31,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:31,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 15:38:31,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:31,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 15:38:31,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:31,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:31,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:31,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:31,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:31,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:31,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:31,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:31,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:31,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:31,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:31,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:31,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:31,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:31,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:31,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:38:31,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:31,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:31,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:31,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:31,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:32,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:38:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:32,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:32,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:32,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:32,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 15:38:32,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:32,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:32,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:32,959 WARN L193 SmtUtils]: Spent 726.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2020-10-12 15:38:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:38:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:32,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:32,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:32,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:32,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:32,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:38:32,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:32,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:32,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:32,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:32,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:38:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:33,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:33,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:33,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:33,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-12 15:38:33,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:38:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:33,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:33,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:36,061 WARN L193 SmtUtils]: Spent 2.30 s on a formula simplification. DAG size of input: 327 DAG size of output: 186 [2020-10-12 15:38:36,104 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 15:38:36,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542636079] [2020-10-12 15:38:36,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:36,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 15:38:36,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053600217] [2020-10-12 15:38:36,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 15:38:36,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:36,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 15:38:36,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-10-12 15:38:36,107 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 16 states. [2020-10-12 15:38:37,526 WARN L193 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 199 DAG size of output: 197 [2020-10-12 15:38:38,861 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 211 DAG size of output: 206 [2020-10-12 15:38:40,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:40,346 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2020-10-12 15:38:40,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 15:38:40,348 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 49 [2020-10-12 15:38:40,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:40,349 INFO L225 Difference]: With dead ends: 75 [2020-10-12 15:38:40,350 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 15:38:40,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2020-10-12 15:38:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 15:38:40,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 15:38:40,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 15:38:40,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-10-12 15:38:40,361 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 49 [2020-10-12 15:38:40,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:40,361 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-10-12 15:38:40,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 15:38:40,361 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-10-12 15:38:40,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 15:38:40,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:40,363 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:40,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 15:38:40,363 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1131246162, now seen corresponding path program 4 times [2020-10-12 15:38:40,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:40,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737502705] [2020-10-12 15:38:40,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 15:38:41,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:38:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-12 15:38:41,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:38:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:41,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 15:38:41,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:41,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:41,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:41,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:41,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:41,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:41,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:41,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:41,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:38:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:41,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:38:41,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:41,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:41,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:41,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:38:41,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:41,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:41,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:41,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:41,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:38:41,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:41,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:41,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:41,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:38:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:41,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:42,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:42,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:42,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 15:38:42,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:42,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:42,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:42,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:38:42,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:42,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:42,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:42,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:42,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:38:42,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:42,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:42,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:42,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:42,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 15:38:42,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:42,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:42,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:42,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:42,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-12 15:38:42,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:42,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:42,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:42,733 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-12 15:38:42,775 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 15:38:42,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737502705] [2020-10-12 15:38:42,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:42,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:38:42,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013291109] [2020-10-12 15:38:42,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:38:42,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:42,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:38:42,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:38:42,778 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand 15 states. [2020-10-12 15:38:43,579 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 113 [2020-10-12 15:38:44,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:44,980 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2020-10-12 15:38:44,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:38:44,981 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-10-12 15:38:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:44,983 INFO L225 Difference]: With dead ends: 110 [2020-10-12 15:38:44,983 INFO L226 Difference]: Without dead ends: 103 [2020-10-12 15:38:44,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:38:44,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-12 15:38:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 59. [2020-10-12 15:38:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 15:38:44,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2020-10-12 15:38:44,997 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 62 [2020-10-12 15:38:44,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:44,997 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2020-10-12 15:38:44,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:38:44,998 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2020-10-12 15:38:44,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 15:38:44,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:44,998 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:44,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 15:38:44,999 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:44,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:44,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1131244240, now seen corresponding path program 2 times [2020-10-12 15:38:45,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:45,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595851854] [2020-10-12 15:38:45,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:45,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 15:38:46,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1093 [2020-10-12 15:38:46,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 15:38:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:46,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 15:38:46,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:46,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:38:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:46,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:46,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:46,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:38:46,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:38:46,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:46,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:38:46,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:46,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:38:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:46,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:46,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:38:46,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:46,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:46,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:46,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:38:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:46,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:46,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-12 15:38:46,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:38:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:46,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:38:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:38:46,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:46,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:46,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:46,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:38:46,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:46,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:46,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:46,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:46,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:38:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:46,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:46,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:46,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 15:38:46,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:46,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:46,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:46,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:46,737 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-12 15:38:46,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:38:46,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:46,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:46,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:46,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 15:38:46,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:38:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:38:46,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:38:46,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:38:46,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 15:38:46,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:46,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:46,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:46,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:38:46,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:38:46,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-12 15:38:46,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:46,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:38:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:38:46,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:38:46,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:38:47,486 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 93 [2020-10-12 15:38:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 15:38:47,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595851854] [2020-10-12 15:38:47,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:38:47,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 15:38:47,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798910308] [2020-10-12 15:38:47,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 15:38:47,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:38:47,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 15:38:47,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 15:38:47,526 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand 15 states. [2020-10-12 15:38:48,452 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 114 [2020-10-12 15:38:50,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:38:50,044 INFO L93 Difference]: Finished difference Result 101 states and 126 transitions. [2020-10-12 15:38:50,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 15:38:50,045 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-10-12 15:38:50,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:38:50,047 INFO L225 Difference]: With dead ends: 101 [2020-10-12 15:38:50,047 INFO L226 Difference]: Without dead ends: 99 [2020-10-12 15:38:50,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=209, Invalid=783, Unknown=0, NotChecked=0, Total=992 [2020-10-12 15:38:50,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-12 15:38:50,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 60. [2020-10-12 15:38:50,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-12 15:38:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 75 transitions. [2020-10-12 15:38:50,061 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 75 transitions. Word has length 62 [2020-10-12 15:38:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:38:50,061 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 75 transitions. [2020-10-12 15:38:50,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 15:38:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 75 transitions. [2020-10-12 15:38:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 15:38:50,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:38:50,062 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:38:50,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 15:38:50,063 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:38:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:38:50,063 INFO L82 PathProgramCache]: Analyzing trace with hash -73284837, now seen corresponding path program 5 times [2020-10-12 15:38:50,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:38:50,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672976898] [2020-10-12 15:38:50,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:38:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:38:50,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:51,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:52,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:53,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:53,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:54,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:38:55,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:38:55,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 15:38:55,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 15:38:55,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 15:38:55,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:38:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 15:38:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:38:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 15:38:55,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:50,120 WARN L193 SmtUtils]: Spent 41.11 s on a formula simplification. DAG size of input: 3907 DAG size of output: 45 [2020-10-12 15:39:50,521 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 48 [2020-10-12 15:39:50,917 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 50 [2020-10-12 15:39:51,274 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 45 [2020-10-12 15:39:51,595 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-10-12 15:39:51,808 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-12 15:39:52,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:39:52,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:52,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:52,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:52,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:52,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:52,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:39:52,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:39:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:52,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:39:52,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:39:52,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:52,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:52,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:52,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:52,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:39:52,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:39:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:52,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:39:52,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:39:52,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:52,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:52,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:52,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:52,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:52,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-12 15:39:52,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:39:52,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:39:52,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:39:52,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:53,796 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 188 DAG size of output: 99 [2020-10-12 15:39:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:39:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:53,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:53,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:53,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:53,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:39:53,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:39:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:39:53,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:39:53,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:39:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:39:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:39:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:39:53,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:39:53,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:39:53,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:39:53,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-12 15:39:53,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:39:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:39:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:39:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:39:53,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:03,155 WARN L193 SmtUtils]: Spent 7.73 s on a formula simplification. DAG size of input: 1007 DAG size of output: 237 [2020-10-12 15:40:03,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:40:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:03,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:03,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:03,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:03,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:40:03,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:03,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:03,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:03,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 15:40:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:04,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:04,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:04,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:04,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-12 15:40:04,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:40:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:40:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:16,309 WARN L193 SmtUtils]: Spent 11.05 s on a formula simplification. DAG size of input: 589 DAG size of output: 220 [2020-10-12 15:40:17,051 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 29 proven. 31 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-12 15:40:17,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672976898] [2020-10-12 15:40:17,051 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:17,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 15:40:17,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213837021] [2020-10-12 15:40:17,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 15:40:17,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:17,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 15:40:17,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-10-12 15:40:17,053 INFO L87 Difference]: Start difference. First operand 60 states and 75 transitions. Second operand 21 states. [2020-10-12 15:40:20,850 WARN L193 SmtUtils]: Spent 3.61 s on a formula simplification. DAG size of input: 230 DAG size of output: 227 [2020-10-12 15:40:25,767 WARN L193 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 308 DAG size of output: 272 [2020-10-12 15:40:30,789 WARN L193 SmtUtils]: Spent 4.51 s on a formula simplification. DAG size of input: 298 DAG size of output: 262 [2020-10-12 15:40:33,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:33,418 INFO L93 Difference]: Finished difference Result 92 states and 114 transitions. [2020-10-12 15:40:33,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 15:40:33,421 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 67 [2020-10-12 15:40:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:33,423 INFO L225 Difference]: With dead ends: 92 [2020-10-12 15:40:33,423 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 15:40:33,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 80.1s TimeCoverageRelationStatistics Valid=163, Invalid=707, Unknown=0, NotChecked=0, Total=870 [2020-10-12 15:40:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 15:40:33,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 15:40:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 15:40:33,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 86 transitions. [2020-10-12 15:40:33,449 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 86 transitions. Word has length 67 [2020-10-12 15:40:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:33,449 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 86 transitions. [2020-10-12 15:40:33,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 15:40:33,449 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 86 transitions. [2020-10-12 15:40:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 15:40:33,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:33,450 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:33,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 15:40:33,451 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:33,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:33,451 INFO L82 PathProgramCache]: Analyzing trace with hash -378021442, now seen corresponding path program 6 times [2020-10-12 15:40:33,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:33,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1614059136] [2020-10-12 15:40:33,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:33,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:33,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:34,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:35,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:35,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:40:35,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 15:40:35,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2044 [2020-10-12 15:40:35,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 15:40:35,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:35,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-12 15:40:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:35,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:35,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:36,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:36,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:36,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:36,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:36,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:36,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:36,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:36,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:40:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:36,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:36,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:36,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:36,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:40:36,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:36,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:36,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:36,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:40:36,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:36,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:36,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 15:40:36,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:40:36,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:40:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:36,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:40:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:36,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:36,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:36,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:36,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:40:36,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:36,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:40:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:36,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:36,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:36,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:36,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:36,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:40:36,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:40:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:36,436 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-12 15:40:36,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:40:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:40:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 15:40:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:36,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:36,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:36,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:36,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-12 15:40:36,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:36,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:40:36,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:37,493 WARN L193 SmtUtils]: Spent 806.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 111 [2020-10-12 15:40:37,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 15:40:37,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:37,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:37,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:37,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:37,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:37,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:40:37,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:37,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:37,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:37,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 15:40:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:37,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:37,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:37,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:37,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:37,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-12 15:40:37,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:37,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:40:37,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:37,964 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-10-12 15:40:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 21 proven. 68 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 15:40:38,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1614059136] [2020-10-12 15:40:38,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:38,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:40:38,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418496742] [2020-10-12 15:40:38,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:40:38,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:38,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:40:38,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:40:38,021 INFO L87 Difference]: Start difference. First operand 67 states and 86 transitions. Second operand 18 states. [2020-10-12 15:40:39,519 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 141 DAG size of output: 113 [2020-10-12 15:40:41,485 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2020-10-12 15:40:41,989 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2020-10-12 15:40:43,047 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2020-10-12 15:40:43,422 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-12 15:40:44,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:44,483 INFO L93 Difference]: Finished difference Result 132 states and 165 transitions. [2020-10-12 15:40:44,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 15:40:44,485 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-12 15:40:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:44,488 INFO L225 Difference]: With dead ends: 132 [2020-10-12 15:40:44,488 INFO L226 Difference]: Without dead ends: 125 [2020-10-12 15:40:44,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=325, Invalid=1315, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:40:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-10-12 15:40:44,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 71. [2020-10-12 15:40:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 15:40:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 90 transitions. [2020-10-12 15:40:44,504 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 90 transitions. Word has length 80 [2020-10-12 15:40:44,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:44,504 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 90 transitions. [2020-10-12 15:40:44,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:40:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 90 transitions. [2020-10-12 15:40:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 15:40:44,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:44,506 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:44,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 15:40:44,506 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:44,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:44,507 INFO L82 PathProgramCache]: Analyzing trace with hash -378023364, now seen corresponding path program 3 times [2020-10-12 15:40:44,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:44,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500011007] [2020-10-12 15:40:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:44,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:45,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:45,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-12 15:40:45,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:45,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1236 [2020-10-12 15:40:45,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 15:40:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:40:45,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-12 15:40:45,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:46,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:40:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:46,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:46,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:46,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:46,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:40:46,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:40:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:46,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:40:46,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:46,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:40:46,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:46,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:46,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:46,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:46,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:46,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:40:46,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:46,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:46,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:40:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:46,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:46,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:46,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:46,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:46,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 15:40:46,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 15:40:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:46,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 15:40:46,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:40:46,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:40:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:46,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:46,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:46,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:46,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 15:40:46,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:46,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:46,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:46,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:40:46,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:40:46,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:46,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:46,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:46,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:46,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:46,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-12 15:40:46,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:46,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:40:46,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 15:40:46,932 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-12 15:40:46,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:40:46,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:46,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:46,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:46,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:46,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:46,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 15:40:46,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:46,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 15:40:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:46,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:46,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:46,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:46,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:46,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 15:40:46,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:46,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:46,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:40:46,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:47,728 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-10-12 15:40:47,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 15:40:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:47,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:47,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:47,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:40:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:40:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:40:47,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:40:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:47,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 15:40:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:47,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:47,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:40:47,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:40:47,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:40:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-12 15:40:47,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:40:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:40:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:40:47,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:40:47,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:40:48,949 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 89 [2020-10-12 15:40:49,048 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 18 proven. 71 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-12 15:40:49,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500011007] [2020-10-12 15:40:49,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 15:40:49,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 15:40:49,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631818174] [2020-10-12 15:40:49,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 15:40:49,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:40:49,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 15:40:49,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-10-12 15:40:49,050 INFO L87 Difference]: Start difference. First operand 71 states and 90 transitions. Second operand 18 states. [2020-10-12 15:40:51,294 WARN L193 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 133 DAG size of output: 126 [2020-10-12 15:40:53,477 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-10-12 15:40:54,003 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-12 15:40:54,475 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-10-12 15:40:55,156 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-12 15:40:55,551 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2020-10-12 15:40:56,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:40:56,522 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2020-10-12 15:40:56,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 15:40:56,523 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-10-12 15:40:56,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:40:56,525 INFO L225 Difference]: With dead ends: 123 [2020-10-12 15:40:56,525 INFO L226 Difference]: Without dead ends: 121 [2020-10-12 15:40:56,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=341, Invalid=1299, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 15:40:56,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-12 15:40:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 72. [2020-10-12 15:40:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-12 15:40:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-10-12 15:40:56,553 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 80 [2020-10-12 15:40:56,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:40:56,554 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-10-12 15:40:56,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 15:40:56,554 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-10-12 15:40:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 15:40:56,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:40:56,555 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 15:40:56,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 15:40:56,555 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:40:56,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:40:56,556 INFO L82 PathProgramCache]: Analyzing trace with hash 122363695, now seen corresponding path program 7 times [2020-10-12 15:40:56,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:40:56,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826910378] [2020-10-12 15:40:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:40:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:40:56,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:40:59,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:00,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:01,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:01,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-12 15:41:01,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 15:41:01,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5161 [2020-10-12 15:41:01,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 15:41:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 15:41:01,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-12 15:41:01,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:15,465 WARN L193 SmtUtils]: Spent 2.53 s on a formula simplification. DAG size of input: 336 DAG size of output: 61 [2020-10-12 15:41:17,225 WARN L193 SmtUtils]: Spent 1.70 s on a formula simplification. DAG size of input: 159 DAG size of output: 56 [2020-10-12 15:41:18,156 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 48 [2020-10-12 15:41:18,446 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-10-12 15:41:18,737 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 40 [2020-10-12 15:41:18,974 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 34 [2020-10-12 15:41:19,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:41:19,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:19,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:19,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:19,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 15:41:19,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:41:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:19,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:41:19,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:19,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-12 15:41:19,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:19,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:19,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:19,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:19,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:19,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:41:19,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:41:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:19,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:41:19,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:41:19,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:19,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:19,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:19,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:19,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:41:19,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:41:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:41:19,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:41:19,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:19,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 15:41:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:19,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:19,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:19,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:19,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 15:41:19,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:41:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:19,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:41:19,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:19,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 15:41:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:19,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:19,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:19,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:19,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-12 15:41:19,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 15:41:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:41:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:41:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:19,917 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-12 15:41:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 15:41:19,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:19,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:19,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:19,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:19,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:19,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 15:41:19,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:19,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:41:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:19,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:41:19,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:19,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-12 15:41:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:19,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:19,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:19,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:19,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 15:41:19,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:41:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:41:19,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:41:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:30,407 WARN L193 SmtUtils]: Spent 9.66 s on a formula simplification. DAG size of input: 352 DAG size of output: 242 [2020-10-12 15:41:30,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 15:41:30,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:30,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:30,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:30,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:30,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:30,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 15:41:30,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 15:41:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:41:30,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-12 15:41:30,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:41:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 15:41:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:41:30,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:41:30,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:41:30,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:41:30,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:41:30,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-12 15:41:30,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:41:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 15:41:30,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-12 15:41:30,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 15:41:30,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0