/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:07:54,694 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:07:54,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:07:54,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:07:54,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:07:54,754 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:07:54,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:07:54,761 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:07:54,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:07:54,768 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:07:54,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:07:54,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:07:54,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:07:54,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:07:54,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:07:54,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:07:54,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:07:54,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:07:54,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:07:54,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:07:54,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:07:54,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:07:54,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:07:54,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:07:54,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:07:54,817 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:07:54,817 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:07:54,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:07:54,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:07:54,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:07:54,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:07:54,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:07:54,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:07:54,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:07:54,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:07:54,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:07:54,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:07:54,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:07:54,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:07:54,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:07:54,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:07:54,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:07:54,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:07:54,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:07:54,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:07:54,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:07:54,862 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:07:54,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:07:54,863 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:07:54,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:07:54,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:07:54,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:07:54,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:07:54,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:07:54,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:07:54,864 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:07:54,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:07:54,865 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:07:54,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:07:54,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:07:54,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:07:54,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:07:54,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:07:54,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:54,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:07:54,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:07:54,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:07:54,867 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:07:54,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:07:54,867 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:07:54,867 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:07:54,867 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true; [2020-09-25 02:07:55,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:07:55,349 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:07:55,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:07:55,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:07:55,359 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:07:55,360 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 02:07:55,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4b3dacea/0c5d1220b4bb41438fdbf61f8434c706/FLAG5b3945150 [2020-09-25 02:07:56,097 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:07:56,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 02:07:56,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4b3dacea/0c5d1220b4bb41438fdbf61f8434c706/FLAG5b3945150 [2020-09-25 02:07:56,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e4b3dacea/0c5d1220b4bb41438fdbf61f8434c706 [2020-09-25 02:07:56,373 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:07:56,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:07:56,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:56,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:07:56,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:07:56,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:56" (1/1) ... [2020-09-25 02:07:56,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67590d86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:56, skipping insertion in model container [2020-09-25 02:07:56,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:07:56" (1/1) ... [2020-09-25 02:07:56,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:07:56,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:07:56,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:56,982 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:07:57,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:07:57,100 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:07:57,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57 WrapperNode [2020-09-25 02:07:57,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:07:57,102 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:07:57,102 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:07:57,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:07:57,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (1/1) ... [2020-09-25 02:07:57,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (1/1) ... [2020-09-25 02:07:57,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (1/1) ... [2020-09-25 02:07:57,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (1/1) ... [2020-09-25 02:07:57,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (1/1) ... [2020-09-25 02:07:57,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (1/1) ... [2020-09-25 02:07:57,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (1/1) ... [2020-09-25 02:07:57,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:07:57,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:07:57,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:07:57,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:07:57,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:07:57,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:07:57,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:07:57,300 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 02:07:57,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 02:07:57,301 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 02:07:57,301 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 02:07:57,301 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:07:57,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:07:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:07:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 02:07:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 02:07:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 02:07:57,302 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 02:07:57,303 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 02:07:57,303 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 02:07:57,303 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 02:07:57,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 02:07:57,303 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 02:07:57,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 02:07:57,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 02:07:57,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 02:07:57,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 02:07:57,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 02:07:57,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 02:07:57,306 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 02:07:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 02:07:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 02:07:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 02:07:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 02:07:57,307 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 02:07:57,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 02:07:57,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 02:07:57,309 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 02:07:57,309 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 02:07:57,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 02:07:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 02:07:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 02:07:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 02:07:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 02:07:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 02:07:57,310 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 02:07:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 02:07:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 02:07:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 02:07:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 02:07:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 02:07:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 02:07:57,311 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 02:07:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 02:07:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 02:07:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 02:07:57,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 02:07:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 02:07:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 02:07:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 02:07:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 02:07:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 02:07:57,313 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 02:07:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 02:07:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 02:07:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 02:07:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:07:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 02:07:57,314 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 02:07:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 02:07:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 02:07:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 02:07:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 02:07:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 02:07:57,315 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 02:07:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:07:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 02:07:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 02:07:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 02:07:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 02:07:57,316 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 02:07:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 02:07:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 02:07:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 02:07:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 02:07:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 02:07:57,317 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 02:07:57,318 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 02:07:57,318 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 02:07:57,318 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 02:07:57,318 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 02:07:57,318 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 02:07:57,318 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 02:07:57,319 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 02:07:57,319 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 02:07:57,319 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 02:07:57,319 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 02:07:57,319 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 02:07:57,319 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 02:07:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 02:07:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 02:07:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 02:07:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 02:07:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 02:07:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 02:07:57,320 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 02:07:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 02:07:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 02:07:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 02:07:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 02:07:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 02:07:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 02:07:57,321 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 02:07:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 02:07:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 02:07:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 02:07:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 02:07:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 02:07:57,322 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 02:07:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 02:07:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 02:07:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:07:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:07:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 02:07:57,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:07:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 02:07:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:07:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:07:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:07:57,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:07:57,699 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 02:07:58,001 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:07:58,001 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 02:07:58,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:58 BoogieIcfgContainer [2020-09-25 02:07:58,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:07:58,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:07:58,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:07:58,021 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:07:58,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:07:56" (1/3) ... [2020-09-25 02:07:58,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf0941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:58, skipping insertion in model container [2020-09-25 02:07:58,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:07:57" (2/3) ... [2020-09-25 02:07:58,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bf0941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:07:58, skipping insertion in model container [2020-09-25 02:07:58,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:07:58" (3/3) ... [2020-09-25 02:07:58,027 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 02:07:58,039 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:07:58,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:07:58,074 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:07:58,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:07:58,109 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:07:58,109 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:07:58,109 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:07:58,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:07:58,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:07:58,110 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:07:58,110 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:07:58,135 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 02:07:58,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 02:07:58,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:58,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:58,148 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:58,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:58,154 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 02:07:58,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:58,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712344707] [2020-09-25 02:07:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:58,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:58,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:07:58,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 02:07:58,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:58,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 02:07:58,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:58,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:07:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:58,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:58,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:58,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:58,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:58,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 02:07:58,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:58,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:58,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:58,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:07:58,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:07:58,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:58,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:58,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:58,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:07:58,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:58,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 02:07:58,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:58,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 02:07:58,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:58,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:58,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1712344707] [2020-09-25 02:07:58,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:58,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 02:07:58,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933436470] [2020-09-25 02:07:58,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 02:07:58,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:58,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 02:07:58,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 02:07:58,701 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 02:07:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:59,011 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 02:07:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 02:07:59,013 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 02:07:59,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:59,029 INFO L225 Difference]: With dead ends: 230 [2020-09-25 02:07:59,029 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 02:07:59,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:07:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 02:07:59,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 02:07:59,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 02:07:59,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 02:07:59,086 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 02:07:59,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:59,086 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 02:07:59,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 02:07:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 02:07:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 02:07:59,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:59,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:59,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:07:59,089 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 02:07:59,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:59,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037884338] [2020-09-25 02:07:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:59,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:59,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 02:07:59,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:59,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 02:07:59,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:07:59,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:07:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:07:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:59,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:07:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:59,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:07:59,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 02:07:59,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:07:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:07:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:07:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:59,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:07:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:59,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:07:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:07:59,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:07:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 02:07:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:07:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:07:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:07:59,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:07:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:07:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:07:59,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037884338] [2020-09-25 02:07:59,447 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:07:59,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:07:59,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923196728] [2020-09-25 02:07:59,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:07:59,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:07:59,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:07:59,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:07:59,450 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 02:07:59,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:07:59,794 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 02:07:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 02:07:59,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 02:07:59,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:07:59,799 INFO L225 Difference]: With dead ends: 172 [2020-09-25 02:07:59,799 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 02:07:59,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:07:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 02:07:59,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 02:07:59,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 02:07:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 02:07:59,824 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 02:07:59,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:07:59,824 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 02:07:59,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:07:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 02:07:59,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 02:07:59,828 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:07:59,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:07:59,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:07:59,829 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:07:59,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:07:59,829 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 02:07:59,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:07:59,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605082347] [2020-09-25 02:07:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:07:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:07:59,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:07:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:00,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:00,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:01,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:01,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:04,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:04,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 02:08:04,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:08:04,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 02:08:04,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:08:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 02:08:04,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 02:08:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:08:04,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:04,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:04,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:04,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:04,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:08:04,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:04,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:04,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:08:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:05,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:05,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:08:05,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:05,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 501 [2020-09-25 02:08:05,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:05,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:08:05,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:05,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:08:05,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:05,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:05,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605082347] [2020-09-25 02:08:05,661 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:08:05,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 02:08:05,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949167821] [2020-09-25 02:08:05,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:08:05,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:05,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:08:05,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:08:05,665 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 11 states. [2020-09-25 02:08:06,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:06,214 INFO L93 Difference]: Finished difference Result 194 states and 213 transitions. [2020-09-25 02:08:06,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 02:08:06,215 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-25 02:08:06,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:06,218 INFO L225 Difference]: With dead ends: 194 [2020-09-25 02:08:06,219 INFO L226 Difference]: Without dead ends: 139 [2020-09-25 02:08:06,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:08:06,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-09-25 02:08:06,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 105. [2020-09-25 02:08:06,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-09-25 02:08:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 115 transitions. [2020-09-25 02:08:06,244 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 115 transitions. Word has length 51 [2020-09-25 02:08:06,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:06,244 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 115 transitions. [2020-09-25 02:08:06,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:08:06,244 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 115 transitions. [2020-09-25 02:08:06,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:08:06,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:06,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:06,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:08:06,253 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash -2045358757, now seen corresponding path program 1 times [2020-09-25 02:08:06,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:06,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438404542] [2020-09-25 02:08:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:06,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:06,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:06,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:07,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:07,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 02:08:11,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:08:11,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 02:08:11,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:08:11,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 02:08:11,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:08:11,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:11,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:11,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:08:11,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:11,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:11,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:08:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:11,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:08:11,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:11,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 02:08:11,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:08:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:08:11,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 02:08:11,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:11,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438404542] [2020-09-25 02:08:11,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:08:11,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:08:11,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020586715] [2020-09-25 02:08:11,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:08:11,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:11,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:08:11,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:08:11,462 INFO L87 Difference]: Start difference. First operand 105 states and 115 transitions. Second operand 5 states. [2020-09-25 02:08:11,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:11,683 INFO L93 Difference]: Finished difference Result 213 states and 235 transitions. [2020-09-25 02:08:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:08:11,683 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-25 02:08:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:11,685 INFO L225 Difference]: With dead ends: 213 [2020-09-25 02:08:11,685 INFO L226 Difference]: Without dead ends: 120 [2020-09-25 02:08:11,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:08:11,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-25 02:08:11,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-09-25 02:08:11,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 02:08:11,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 131 transitions. [2020-09-25 02:08:11,696 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 131 transitions. Word has length 52 [2020-09-25 02:08:11,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:11,696 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 131 transitions. [2020-09-25 02:08:11,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:08:11,697 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 131 transitions. [2020-09-25 02:08:11,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 02:08:11,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:11,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:11,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:08:11,699 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:11,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:11,699 INFO L82 PathProgramCache]: Analyzing trace with hash -894397866, now seen corresponding path program 1 times [2020-09-25 02:08:11,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:11,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011768647] [2020-09-25 02:08:11,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:11,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:11,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:12,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:12,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:16,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:16,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 02:08:16,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:08:16,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4485 [2020-09-25 02:08:16,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:08:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:08:16,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 02:08:16,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:16,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:16,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:16,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:16,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:16,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:16,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:16,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:16,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:08:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:16,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 02:08:16,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 02:08:16,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:08:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:08:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 02:08:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:16,488 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:16,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011768647] [2020-09-25 02:08:16,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:16,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 02:08:16,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519652367] [2020-09-25 02:08:16,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 02:08:16,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:16,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 02:08:16,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:08:16,491 INFO L87 Difference]: Start difference. First operand 120 states and 131 transitions. Second operand 9 states. [2020-09-25 02:08:16,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:16,797 INFO L93 Difference]: Finished difference Result 183 states and 199 transitions. [2020-09-25 02:08:16,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:08:16,798 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-09-25 02:08:16,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:16,799 INFO L225 Difference]: With dead ends: 183 [2020-09-25 02:08:16,799 INFO L226 Difference]: Without dead ends: 147 [2020-09-25 02:08:16,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 02:08:16,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-09-25 02:08:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2020-09-25 02:08:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 02:08:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 136 transitions. [2020-09-25 02:08:16,809 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 136 transitions. Word has length 55 [2020-09-25 02:08:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:16,809 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 136 transitions. [2020-09-25 02:08:16,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 02:08:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 136 transitions. [2020-09-25 02:08:16,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 02:08:16,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:16,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:16,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:08:16,812 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:16,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 02:08:16,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:16,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125000198] [2020-09-25 02:08:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:16,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:16,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:21,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:21,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:21,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 02:08:21,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:08:21,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 02:08:21,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:21,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:08:21,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 02:08:21,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 02:08:21,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:08:21,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:21,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:21,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:21,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:21,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:08:21,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:21,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:21,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:21,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:08:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:21,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:22,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:22,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 02:08:22,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-09-25 02:08:22,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:22,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:08:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:08:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 02:08:22,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:08:22,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125000198] [2020-09-25 02:08:22,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:22,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 02:08:22,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276105208] [2020-09-25 02:08:22,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 02:08:22,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:22,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 02:08:22,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:08:22,406 INFO L87 Difference]: Start difference. First operand 125 states and 136 transitions. Second operand 11 states. [2020-09-25 02:08:22,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:22,851 INFO L93 Difference]: Finished difference Result 240 states and 263 transitions. [2020-09-25 02:08:22,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 02:08:22,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 02:08:22,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:22,855 INFO L225 Difference]: With dead ends: 240 [2020-09-25 02:08:22,855 INFO L226 Difference]: Without dead ends: 173 [2020-09-25 02:08:22,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-25 02:08:22,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-09-25 02:08:22,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 146. [2020-09-25 02:08:22,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-25 02:08:22,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 159 transitions. [2020-09-25 02:08:22,875 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 159 transitions. Word has length 71 [2020-09-25 02:08:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:22,875 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 159 transitions. [2020-09-25 02:08:22,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 02:08:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 159 transitions. [2020-09-25 02:08:22,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 02:08:22,877 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:22,878 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:22,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:08:22,878 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:22,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:22,879 INFO L82 PathProgramCache]: Analyzing trace with hash 720373755, now seen corresponding path program 2 times [2020-09-25 02:08:22,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:22,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131338035] [2020-09-25 02:08:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:23,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:23,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:27,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:27,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-25 02:08:27,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:08:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:08:27,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:08:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:08:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:08:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:27,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:27,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:27,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:27,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:27,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:27,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:27,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:27,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:27,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:27,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:08:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:28,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:28,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:28,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 02:08:28,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:08:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 438 [2020-09-25 02:08:28,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:08:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:08:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:08:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:28,530 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 02:08:28,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131338035] [2020-09-25 02:08:28,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:28,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:08:28,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206733773] [2020-09-25 02:08:28,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:08:28,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:28,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:08:28,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:08:28,532 INFO L87 Difference]: Start difference. First operand 146 states and 159 transitions. Second operand 6 states. [2020-09-25 02:08:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:28,848 INFO L93 Difference]: Finished difference Result 232 states and 254 transitions. [2020-09-25 02:08:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:08:28,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 90 [2020-09-25 02:08:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:28,849 INFO L225 Difference]: With dead ends: 232 [2020-09-25 02:08:28,849 INFO L226 Difference]: Without dead ends: 134 [2020-09-25 02:08:28,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:08:28,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-25 02:08:28,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-09-25 02:08:28,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-09-25 02:08:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2020-09-25 02:08:28,857 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 90 [2020-09-25 02:08:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:28,858 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2020-09-25 02:08:28,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:08:28,858 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2020-09-25 02:08:28,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 02:08:28,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:28,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:28,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:08:28,860 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:28,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 3 times [2020-09-25 02:08:28,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:28,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882763314] [2020-09-25 02:08:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:30,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:33,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:33,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 02:08:33,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:08:33,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:08:33,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:08:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:33,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:08:33,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:33,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:33,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:33,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:33,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:33,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:33,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:33,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:33,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:33,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:08:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:35,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:35,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:08:35,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:35,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1097 [2020-09-25 02:08:35,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 02:08:35,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:35,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 02:08:35,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:35,414 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 19 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 02:08:35,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882763314] [2020-09-25 02:08:35,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:08:35,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 02:08:35,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507865803] [2020-09-25 02:08:35,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 02:08:35,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 02:08:35,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:08:35,416 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 17 states. [2020-09-25 02:08:36,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:36,195 INFO L93 Difference]: Finished difference Result 243 states and 265 transitions. [2020-09-25 02:08:36,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:08:36,196 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 91 [2020-09-25 02:08:36,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:36,197 INFO L225 Difference]: With dead ends: 243 [2020-09-25 02:08:36,197 INFO L226 Difference]: Without dead ends: 188 [2020-09-25 02:08:36,199 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2020-09-25 02:08:36,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-25 02:08:36,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 140. [2020-09-25 02:08:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 02:08:36,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 151 transitions. [2020-09-25 02:08:36,211 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 151 transitions. Word has length 91 [2020-09-25 02:08:36,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:36,212 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 151 transitions. [2020-09-25 02:08:36,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 02:08:36,213 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 151 transitions. [2020-09-25 02:08:36,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-25 02:08:36,218 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:36,218 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:36,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:08:36,219 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:36,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:36,219 INFO L82 PathProgramCache]: Analyzing trace with hash -381143206, now seen corresponding path program 1 times [2020-09-25 02:08:36,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:36,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443527866] [2020-09-25 02:08:36,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:36,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:37,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:41,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:41,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-09-25 02:08:41,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:08:41,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 02:08:41,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 02:08:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 02:08:41,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 02:08:41,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:41,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:08:41,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:41,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:41,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:08:41,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:08:41,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:08:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:41,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:08:41,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:41,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 02:08:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:41,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:42,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:08:42,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 02:08:42,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:08:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 858 [2020-09-25 02:08:42,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:08:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 02:08:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:08:42,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 02:08:42,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:08:42,584 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 02:08:42,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443527866] [2020-09-25 02:08:42,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:08:42,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-25 02:08:42,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554997510] [2020-09-25 02:08:42,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 02:08:42,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:08:42,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 02:08:42,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-09-25 02:08:42,587 INFO L87 Difference]: Start difference. First operand 140 states and 151 transitions. Second operand 18 states. [2020-09-25 02:08:43,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:08:43,463 INFO L93 Difference]: Finished difference Result 243 states and 264 transitions. [2020-09-25 02:08:43,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 02:08:43,465 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 93 [2020-09-25 02:08:43,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:08:43,467 INFO L225 Difference]: With dead ends: 243 [2020-09-25 02:08:43,467 INFO L226 Difference]: Without dead ends: 188 [2020-09-25 02:08:43,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2020-09-25 02:08:43,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-25 02:08:43,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 144. [2020-09-25 02:08:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-25 02:08:43,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2020-09-25 02:08:43,475 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 93 [2020-09-25 02:08:43,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:08:43,476 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2020-09-25 02:08:43,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 02:08:43,476 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2020-09-25 02:08:43,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-09-25 02:08:43,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:08:43,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:08:43,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 02:08:43,478 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:08:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:08:43,478 INFO L82 PathProgramCache]: Analyzing trace with hash -633699604, now seen corresponding path program 1 times [2020-09-25 02:08:43,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:08:43,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687732247] [2020-09-25 02:08:43,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:08:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:08:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:08:44,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking...