/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --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/sll_nondet_insert-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:08,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:08,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:08,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:08,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:08,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:08,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:08,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:08,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:08,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:08,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:08,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:08,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:08,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:08,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:08,802 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:08,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:08,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:08,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:08,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:08,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:08,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:08,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:08,813 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:08,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:08,816 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:08,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:08,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:08,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:08,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:08,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:08,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:08,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:08,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:08,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:08,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:08,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:08,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:08,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:08,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:08,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:08,827 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 14:36:08,854 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:08,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:08,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:08,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:08,856 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:08,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:08,856 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:08,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:08,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:08,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:08,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:08,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:08,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:08,858 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:08,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:08,858 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:08,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:08,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:08,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:08,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:08,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:08,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:08,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:08,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:08,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:08,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:08,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:08,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:08,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:08,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:36:09,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:09,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:09,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:09,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:09,334 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:09,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 14:36:09,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4915f0799/bcf6158d09ed4683966e7617455c643c/FLAGd96e8b108 [2020-09-25 14:36:10,072 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:10,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-1.i [2020-09-25 14:36:10,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4915f0799/bcf6158d09ed4683966e7617455c643c/FLAGd96e8b108 [2020-09-25 14:36:10,298 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4915f0799/bcf6158d09ed4683966e7617455c643c [2020-09-25 14:36:10,313 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:10,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:10,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:10,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:10,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:10,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:10" (1/1) ... [2020-09-25 14:36:10,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa43bf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:10, skipping insertion in model container [2020-09-25 14:36:10,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:10" (1/1) ... [2020-09-25 14:36:10,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:10,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:10,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:10,926 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:10,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:11,042 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:11,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11 WrapperNode [2020-09-25 14:36:11,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:11,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:11,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:11,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:11,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (1/1) ... [2020-09-25 14:36:11,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (1/1) ... [2020-09-25 14:36:11,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (1/1) ... [2020-09-25 14:36:11,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (1/1) ... [2020-09-25 14:36:11,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (1/1) ... [2020-09-25 14:36:11,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (1/1) ... [2020-09-25 14:36:11,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (1/1) ... [2020-09-25 14:36:11,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:11,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:11,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:11,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:11,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (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 14:36:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 14:36:11,212 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 14:36:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 14:36:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-09-25 14:36:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2020-09-25 14:36:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-09-25 14:36:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-09-25 14:36:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2020-09-25 14:36:11,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:11,214 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 14:36:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 14:36:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:36:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:36:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:36:11,215 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:36:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:36:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:36:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:36:11,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:36:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:36:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:36:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:36:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:36:11,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:36:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:36:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:36:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:36:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:36:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:36:11,218 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:36:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:36:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:36:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:36:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:36:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:36:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:36:11,219 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:36:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:36:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:36:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:36:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:36:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:36:11,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:36:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:36:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:36:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:36:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:36:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:36:11,221 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:36:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:36:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:36:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:36:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:36:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:36:11,222 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:36:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:36:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:36:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:36:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:36:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:36:11,223 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:36:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:36:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:36:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:36:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:36:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:36:11,224 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:36:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:36:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:36:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:36:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:36:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:36:11,225 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:36:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:36:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:36:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:36:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:36:11,226 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:36:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:36:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:36:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:36:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:36:11,227 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:36:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:36:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:36:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:36:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:36:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:36:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:36:11,228 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:36:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:36:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:36:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:36:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:36:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:36:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:36:11,229 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:36:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:36:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:36:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:36:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:36:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:36:11,230 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:36:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:36:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:36:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:36:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:36:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:36:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:36:11,231 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:36:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:36:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:36:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:36:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 14:36:11,232 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-09-25 14:36:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:36:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:36:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2020-09-25 14:36:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:36:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-09-25 14:36:11,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:36:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-09-25 14:36:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2020-09-25 14:36:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 14:36:11,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 14:36:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:11,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:11,623 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 14:36:11,996 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:11,996 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 14:36:12,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:12 BoogieIcfgContainer [2020-09-25 14:36:12,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:12,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:12,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:12,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:12,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:10" (1/3) ... [2020-09-25 14:36:12,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ef0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:12, skipping insertion in model container [2020-09-25 14:36:12,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:11" (2/3) ... [2020-09-25 14:36:12,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ef0d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:12, skipping insertion in model container [2020-09-25 14:36:12,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:12" (3/3) ... [2020-09-25 14:36:12,031 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-1.i [2020-09-25 14:36:12,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:12,058 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:12,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:12,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:12,109 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:12,109 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:12,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:12,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:12,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:12,110 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:12,110 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:12,137 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states. [2020-09-25 14:36:12,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 14:36:12,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:12,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:12,151 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:12,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:12,158 INFO L82 PathProgramCache]: Analyzing trace with hash 422432984, now seen corresponding path program 1 times [2020-09-25 14:36:12,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:12,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168230068] [2020-09-25 14:36:12,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 14:36:12,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:12,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-25 14:36:12,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:36:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:12,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:36:12,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:12,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:12,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:12,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:36:12,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:12,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:12,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:12,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:36:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:12,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:12,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:36:12,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 14:36:12,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:12,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:12,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-25 14:36:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:12,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:36:12,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:36:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:12,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:36:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 14:36:12,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:36:12,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 14:36:12,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 14:36:12,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:12,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:36:12,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 14:36:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 14:36:13,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168230068] [2020-09-25 14:36:13,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:13,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-09-25 14:36:13,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520851579] [2020-09-25 14:36:13,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:36:13,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:13,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:36:13,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:36:13,045 INFO L87 Difference]: Start difference. First operand 142 states. Second operand 4 states. [2020-09-25 14:36:13,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:13,395 INFO L93 Difference]: Finished difference Result 289 states and 337 transitions. [2020-09-25 14:36:13,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:36:13,397 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-25 14:36:13,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:13,413 INFO L225 Difference]: With dead ends: 289 [2020-09-25 14:36:13,414 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 14:36:13,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 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 14:36:13,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 14:36:13,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 114. [2020-09-25 14:36:13,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 14:36:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 123 transitions. [2020-09-25 14:36:13,491 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 123 transitions. Word has length 54 [2020-09-25 14:36:13,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:13,492 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 123 transitions. [2020-09-25 14:36:13,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:36:13,492 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 123 transitions. [2020-09-25 14:36:13,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 14:36:13,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:13,497 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:13,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:36:13,498 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:13,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash 333013349, now seen corresponding path program 1 times [2020-09-25 14:36:13,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:13,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580415450] [2020-09-25 14:36:13,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:14,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:14,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:14,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:18,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 14:36:18,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:36:18,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:36:18,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:18,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:36:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:36:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-25 14:36:18,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:18,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:18,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:18,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:18,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:18,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:18,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:18,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:18,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:18,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:18,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:36:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:18,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:18,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:18,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:36:18,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-09-25 14:36:18,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:18,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:18,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:36:18,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:18,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:36:18,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:18,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:18,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:18,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 14:36:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:18,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:36:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 14:36:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:18,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:19,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:19,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:19,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:19,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 14:36:19,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:19,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:36:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:36:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:36:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:19,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:19,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:19,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:36:19,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:19,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:19,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 14:36:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:19,188 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:36:19,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580415450] [2020-09-25 14:36:19,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:19,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:36:19,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014407263] [2020-09-25 14:36:19,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:36:19,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:19,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:36:19,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:36:19,193 INFO L87 Difference]: Start difference. First operand 114 states and 123 transitions. Second operand 13 states. [2020-09-25 14:36:20,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:20,438 INFO L93 Difference]: Finished difference Result 289 states and 328 transitions. [2020-09-25 14:36:20,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 14:36:20,438 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-09-25 14:36:20,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:20,442 INFO L225 Difference]: With dead ends: 289 [2020-09-25 14:36:20,442 INFO L226 Difference]: Without dead ends: 206 [2020-09-25 14:36:20,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-09-25 14:36:20,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-25 14:36:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 152. [2020-09-25 14:36:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 14:36:20,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 171 transitions. [2020-09-25 14:36:20,485 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 171 transitions. Word has length 69 [2020-09-25 14:36:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:20,487 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 171 transitions. [2020-09-25 14:36:20,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:36:20,488 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 171 transitions. [2020-09-25 14:36:20,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:36:20,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:20,498 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:20,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:36:20,498 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:20,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:20,499 INFO L82 PathProgramCache]: Analyzing trace with hash -208344862, now seen corresponding path program 1 times [2020-09-25 14:36:20,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:20,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [421796694] [2020-09-25 14:36:20,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:20,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:20,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:20,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:22,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:24,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:25,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-09-25 14:36:25,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:36:25,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:36:25,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:25,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:36:25,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:36:25,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:36:25,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:25,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:25,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:25,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:25,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:25,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:25,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:25,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:36:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:25,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:25,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:25,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:36:25,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 14:36:25,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:25,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:25,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:25,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:36:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:25,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 14:36:25,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:25,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:26,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:26,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:26,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:26,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:36:26,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:26,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:26,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:26,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:36:26,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:26,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 14:36:26,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:26,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:26,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:36:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:26,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:26,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:36:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:26,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:26,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-09-25 14:36:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:26,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:26,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:26,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 14:36:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:26,117 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:26,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [421796694] [2020-09-25 14:36:26,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:26,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:36:26,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027176330] [2020-09-25 14:36:26,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:36:26,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:26,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:36:26,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:36:26,122 INFO L87 Difference]: Start difference. First operand 152 states and 171 transitions. Second operand 14 states. [2020-09-25 14:36:27,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:27,400 INFO L93 Difference]: Finished difference Result 339 states and 382 transitions. [2020-09-25 14:36:27,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:36:27,401 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 71 [2020-09-25 14:36:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:27,404 INFO L225 Difference]: With dead ends: 339 [2020-09-25 14:36:27,404 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 14:36:27,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:36:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 14:36:27,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 167. [2020-09-25 14:36:27,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-25 14:36:27,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 185 transitions. [2020-09-25 14:36:27,443 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 185 transitions. Word has length 71 [2020-09-25 14:36:27,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:27,444 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 185 transitions. [2020-09-25 14:36:27,444 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:36:27,444 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 185 transitions. [2020-09-25 14:36:27,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 14:36:27,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:27,446 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:27,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:36:27,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:27,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:27,447 INFO L82 PathProgramCache]: Analyzing trace with hash 454377439, now seen corresponding path program 1 times [2020-09-25 14:36:27,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:27,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033511260] [2020-09-25 14:36:27,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:27,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 14:36:29,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2106 [2020-09-25 14:36:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:36:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:36:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:36:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:29,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:29,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:36:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:36:29,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:36:29,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:29,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:29,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:36:29,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:36:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:36:29,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:29,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:36:29,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 14:36:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:36:29,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:36:29,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 14:36:29,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:29,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-25 14:36:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:29,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:29,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:29,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 14:36:29,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:29,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:29,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033511260] [2020-09-25 14:36:29,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:29,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:36:29,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489092565] [2020-09-25 14:36:29,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:36:29,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:29,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:36:29,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:36:29,851 INFO L87 Difference]: Start difference. First operand 167 states and 185 transitions. Second operand 12 states. [2020-09-25 14:36:30,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:30,760 INFO L93 Difference]: Finished difference Result 334 states and 376 transitions. [2020-09-25 14:36:30,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:36:30,760 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 73 [2020-09-25 14:36:30,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:30,763 INFO L225 Difference]: With dead ends: 334 [2020-09-25 14:36:30,763 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 14:36:30,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2020-09-25 14:36:30,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 14:36:30,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 174. [2020-09-25 14:36:30,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-25 14:36:30,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 193 transitions. [2020-09-25 14:36:30,805 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 193 transitions. Word has length 73 [2020-09-25 14:36:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:30,805 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 193 transitions. [2020-09-25 14:36:30,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:36:30,809 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 193 transitions. [2020-09-25 14:36:30,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-25 14:36:30,811 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:30,811 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 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 14:36:30,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:36:30,812 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:30,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:30,812 INFO L82 PathProgramCache]: Analyzing trace with hash -472966004, now seen corresponding path program 1 times [2020-09-25 14:36:30,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:30,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [909828542] [2020-09-25 14:36:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:33,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:33,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:33,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:34,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 14:36:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 27 [2020-09-25 14:36:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:36:35,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:36:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:36:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:36:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:35,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:35,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:35,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:36:35,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:35,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:35,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:35,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:36:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:36,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:36:36,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 14:36:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:36,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:36:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:36:36,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 14:36:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:36,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:36,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 14:36:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:36,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:36,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:36:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 14:36:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:36,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:36,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:36,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:36,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:36,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:36,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:36,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:36,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-09-25 14:36:36,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:36,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:36,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:36,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:36,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:36,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:36,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 14:36:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:36:36,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [909828542] [2020-09-25 14:36:36,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:36,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:36:36,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478621359] [2020-09-25 14:36:36,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:36:36,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:36,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:36:36,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:36:36,562 INFO L87 Difference]: Start difference. First operand 174 states and 193 transitions. Second operand 13 states. [2020-09-25 14:36:37,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:37,660 INFO L93 Difference]: Finished difference Result 346 states and 395 transitions. [2020-09-25 14:36:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 14:36:37,661 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2020-09-25 14:36:37,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:37,665 INFO L225 Difference]: With dead ends: 346 [2020-09-25 14:36:37,665 INFO L226 Difference]: Without dead ends: 243 [2020-09-25 14:36:37,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2020-09-25 14:36:37,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-25 14:36:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 185. [2020-09-25 14:36:37,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-25 14:36:37,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 206 transitions. [2020-09-25 14:36:37,687 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 206 transitions. Word has length 79 [2020-09-25 14:36:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:37,688 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 206 transitions. [2020-09-25 14:36:37,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:36:37,688 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 206 transitions. [2020-09-25 14:36:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-25 14:36:37,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:37,689 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:37,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:36:37,690 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:37,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:37,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1107353865, now seen corresponding path program 2 times [2020-09-25 14:36:37,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:37,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191439799] [2020-09-25 14:36:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:38,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 14:36:42,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:36:42,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:36:42,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:36:42,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:36:42,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 14:36:42,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:42,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:42,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:42,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:42,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:42,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:42,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:42,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:36:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:42,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:36:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:42,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 14:36:42,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:36:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:36:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:42,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-25 14:36:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:42,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:36:42,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:42,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 14:36:42,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:42,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:36:42,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:43,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 14:36:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:43,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:43,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:43,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:36:43,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:43,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:43,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:43,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:43,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 14:36:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:43,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:43,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:43,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:43,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-25 14:36:43,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:43,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:43,094 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 14:36:43,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191439799] [2020-09-25 14:36:43,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:43,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 14:36:43,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151181556] [2020-09-25 14:36:43,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:36:43,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:43,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:36:43,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:36:43,101 INFO L87 Difference]: Start difference. First operand 185 states and 206 transitions. Second operand 14 states. [2020-09-25 14:36:44,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:44,737 INFO L93 Difference]: Finished difference Result 443 states and 513 transitions. [2020-09-25 14:36:44,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 14:36:44,737 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 81 [2020-09-25 14:36:44,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:44,741 INFO L225 Difference]: With dead ends: 443 [2020-09-25 14:36:44,741 INFO L226 Difference]: Without dead ends: 306 [2020-09-25 14:36:44,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=927, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 14:36:44,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-25 14:36:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 194. [2020-09-25 14:36:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-25 14:36:44,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 215 transitions. [2020-09-25 14:36:44,766 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 215 transitions. Word has length 81 [2020-09-25 14:36:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:44,767 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 215 transitions. [2020-09-25 14:36:44,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:36:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 215 transitions. [2020-09-25 14:36:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-25 14:36:44,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:44,769 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:44,769 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:36:44,769 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:44,769 INFO L82 PathProgramCache]: Analyzing trace with hash 27846035, now seen corresponding path program 1 times [2020-09-25 14:36:44,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:44,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205452579] [2020-09-25 14:36:44,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:44,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:44,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:46,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:49,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 14:36:49,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:49,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:36:49,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:49,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:36:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:36:49,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:36:49,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:49,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:49,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:49,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:49,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:49,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:49,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:49,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:49,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:36:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:49,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:49,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:36:49,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:49,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:49,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:49,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:49,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-25 14:36:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:49,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:49,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:50,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:50,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:36:50,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:50,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 14:36:50,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:50,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:36:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:50,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:36:50,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:50,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:36:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:50,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:50,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:50,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-25 14:36:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:36:50,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:50,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:36:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:36:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:50,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-25 14:36:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:50,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:50,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:50,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:50,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:50,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:36:50,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:50,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:36:50,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 14:36:50,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205452579] [2020-09-25 14:36:50,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:50,180 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 14:36:50,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624741546] [2020-09-25 14:36:50,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:36:50,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:50,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:36:50,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:36:50,182 INFO L87 Difference]: Start difference. First operand 194 states and 215 transitions. Second operand 12 states. [2020-09-25 14:36:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:51,085 INFO L93 Difference]: Finished difference Result 244 states and 273 transitions. [2020-09-25 14:36:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:36:51,085 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-09-25 14:36:51,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:51,091 INFO L225 Difference]: With dead ends: 244 [2020-09-25 14:36:51,091 INFO L226 Difference]: Without dead ends: 238 [2020-09-25 14:36:51,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:36:51,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-25 14:36:51,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 214. [2020-09-25 14:36:51,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-09-25 14:36:51,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 241 transitions. [2020-09-25 14:36:51,126 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 241 transitions. Word has length 82 [2020-09-25 14:36:51,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:51,128 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 241 transitions. [2020-09-25 14:36:51,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:36:51,129 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 241 transitions. [2020-09-25 14:36:51,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 14:36:51,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:51,132 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 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 14:36:51,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:36:51,133 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:51,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:51,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1804595944, now seen corresponding path program 1 times [2020-09-25 14:36:51,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:51,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113156901] [2020-09-25 14:36:51,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:51,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:51,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking...